Hi Yingz0r,
The Kickstarter paths will be available in the game, they'll be patched in, in a later update ^^ so everyone can see them.
For the 18+ scenes, there are a lot of scenes over the course of each path, I think each path has somewhere between 4-7 scenes each, it varies.
The top/bottom is set, it changes depending on who you're dating.
I hope you like the game! ( ^^)/