I think its a great idea, your models are a great start (I LOVE curvy women generous proportions) . BUT I will advise you to take into consideration the following before starting your journey:
1) 99.9% of us are ungrateful freeloaders (including me lol) . Expect very little, hope for a pleasant surprise in terms of monetary support
2) You think the process of creating the game is fun and/or you'll get a useful skill out of it
3) Use the existing scripts / plotlines as is and focus more on creating hot sex scenes. Assuming you're using HS, get creative and chain things together (BJ > missionary > doggy > cumshot as example single scene) . There is no such things as too many hot, kinky sex scenes

4) Having selectable costumes / daily wear is always nice in corruption games. If you find it easy to add, I think it's a great feature but don't push yourself if the learning curve is already high
Best of luck, personally I don't play games until they've been in dev until half a year or so, but I'll be keeping track. If you need a proofreader for English down the road I might be interested