I will not sacrifice my Faulty Apprentice vision for anything other than budget restrictions. So rest assured touching will stay (=
Final release copy will include Chapter One and all subsequent chapters. Preordering is lowest price for the full release and gives you access to bonus rewards, but will not give you access to Ch1 NSFW version.
Purchasing Ch1 NSFW here on itch will give you access now and allow you to put the $10 you spend now towards the full game purchase at the time of release (to be announced).
Final price may vary, so both options have their merits. Hope that answers your questions, but if you have anymore let me know! =D