fnaf au fanfic....... help?

i was thinking of starting a fnaf au fanfic that focuses on William Afton and his life before the pizzeria + his children and what happened next. like, i have an entire family tree for them and a general idea of where the story will go and how it will end........................

it's not entirely canon (did i say it's an au?), so there are some new characters, and Will isn't exactly the same as the canon one. for example, I gave William a twin brother and an elder sister. Michael has a son, who is one of the major characters, and his legal guardian is Michael's cousin. Mrs. Afton is a more fleshed-out character (and an engineer who specializes in robotics just like her husband!). 

the timeline was also altered, because i reaaaaaally hate the inclusion of vanny, glitchtrap and whatever else happens after the sixth game, so it's not there at all.....

not sure if i actually want to post it anywhere. on ao3? quotev? is there any other site..

i'm not an expert on fanfics, please save me!!!!! would anyone even be interested in it?!??