Ok, this is BIG... Pun intended. I didn't expect this post to be as long as it is, but maybe it can be of some help.
Well, I'm a happily married father and there's also the costs, so I'm fairly sure I'm not going, but if this event ends up being a reality, it's going to be one of the most amazing experiences ever for every single person who decides to go.
Anyway, I'd like to add my two cents here.
You're basically talking about throwing a huge one week long party for big boob lovers to have the time of their lives, and I understand you want it to actually happen so, obviously, you're talking about costs and how to keep everything below a certain price for the attendees. That's perfectly understandable, but throws a few problems to the equation.
First of all, you're talking about cutting to the absolute essentials on food and drinks. That's one of the first no-no's when planning any party. Specially one that will be all about boobs and nudity and more boobs. Most models will want (or need) to get in the mood before starting and of course will ask for drinks. Attendees will need some as well to feel a bit more relaxed in front of the ladies. You can't just say "ok, but everyone's restricted to X drinks for each event". The same principle goes for food or basically any kind of restriction you want to include to cut costs. If the models feel like they're being treated well, if it's obvious that the people behind the event have actually spent some money to have a good time with them, they'll be more than willing to give you their best during the week. If not, they'll probably do the basics and that's all. Have in mind that some basic restrictions are absolutely necessary, like the fact that people will be able to touch the models only under certain circumstances, like lap dances and things like that, but never go too far. People will have to understand that these models are not whores, so sex is definitely not included in the price. Attendees will have to accept the blue balls on that matter so it'd be nice to have some kind of treat on other "pleasures", such as food and drinks in return.
I'm not saying you should have an unlimited supply, but maybe being generous on an estimated amount of food and drinks and then adding a 50% more on top, would be a good idea. Have in mind that people here are paying for a very exclusive and special experience. I wouldn't want to cut costs. Actually, I'd ask people wanting to go how much would they'd be willing to pay, set an average and try to stay slightly below it.
Now, about the models. That's another big problem.
First of all, IMHO, the current list features mainly old legends (some fake, some naturals) and many bbw's (there's no way Larkin Love would do something like this). That may be ok for a certain amount of people here, but I'd try to add some slim models with big implants as well. A bit of everything.
Second, cam models, amateurs and similar. Have in mind that these models don't have managers for the legal stuff (they'll probably have to sign a contract before going) and, most important, they normally perform alone at home, in front of a computer and with the option to shut everything down the moment they don't feel comfortable. Even if they really think they could do it, I wouldn't risk 2 or 3 models having an anxiety breakdown in front of everyone the first night. IMHO, the best option for at least half of the models would be professional pornstars without a contract with a production company. Why? Because they're pros, they can deal with an audience and, most important, they're more likely to know each other, which helps. That's something the original Boobcruises had that you won't. All the models attending had a contract with Score or at least had made enough appearances to be comfortable with the crew and most of the other models. Also most of them used to perform in strip clubs. If this new Boobcruise goes from instagrammers and cam models to softcore models and some pornstars, many of them are going to feel a bit uneasy, so I'd try to get models who are perfectly ok with live audiences, who don't mind working with other models... That's why I said pro pornstars is probably your best option. And you've got lots to choose from. They may not be as huge as the original Score models, but you can definitely find some very big boobs out there and everyone knows them, so you've got the famous factor.
About the option to let the models shoot their own material there to get them to go for less or even free. I wouldn't do it just because that means they will need to spend a decent amount of time shooting on their own, which is time they don't spend with the guests. Unless of course those sessions can have people watching. But anyway, it goes back to the fact that the models need to feel special and cared for, so again, if you try to cut costs on their fees, they'll probably cut on their performances and on what they'd be willing to do giving the situation (not talking about sex).
On a final note, this is just my personal opinion here, but I'd try to reduce old legends to just 3 or 4. Sort of an homage. You have to appeal to a lot of different tastes here and I don't know what would be the average age amongst attendees, but I'd probably try to go if I was single. I'm 35 now, and I mean no disrespect at all, because they're big boob legends and I fapped to them like crazy 20 years ago, but I can honestly say I wouldn't really like to make a big economical effort and spend a week with Casey James, Sarenna or Minka as they are now. Maybe it's just me, but I think most of the people asking for older stars are doing so mainly for the nostalgia factor.
That's it! I hope some of it helps.