My opinion only, I can't possibly speak for everyone:
It would be awfully sanctimonious of me to preach about body alterations of any kind, having had a breast augmentation myself. That aside, you've asked for female opinions, so here's mine.
Gigantic testicles like that which you describe, frankly, don't do anything for me. For one, it seems that they would be in the way an awfull lot of the time. Besides which, that's not the important part...
If your tool is huge, but doesn't work properly (something that I would strongly caution you to investigate to the ends of all knowledge), what would be the point of having it?
My husband is gigantic, but so is the rest of him (and, admittedly, he's even bigger relative to me because I'm very small framed). The first time it was "naughty time," I freaked - I knew that he was large, but when he tumesced I literally didn't know how it was going to fit (my words were "You're going to put that WHERE?"). Fortunately, he was no stranger to that reaction, and knew exactly how to work it without hurting me (it took A LOT of warmup).
I'll admit that the "package check" was one of the phases of the mating dance before I was married, but it certainly wasn't a qualifying factor - I've had guys of all sizes and shapes, and varying degrees of satisfaction with all.
I guess what I'm saying is, it's not my cup of tea, but I'm not everyone's physical ideal, either (just ask those dang judges...GRRR)