Heya! Great idea to publish as ebook. Quick and painless and you get instant feedback!
When I write, I try to keep myself completely out of the story. It's hard enough to think like someone else, I don't have to make it harder by actually adding my own life to the story I tell. I will insert an anecdote here or there, though, usually things that happened to friends and family, always mashed up so nobody feels it's personal.
The story lines I wouldn't attempt because they appear over-represented are (a) the coming of age / coming out story, (b) the gay love vs. adversity (usually homophobia) story, (c) the fairy tale romance. For each of those story lines I can name two friends that published a novel in those genres.
I wouldn't mind seeing more historic fiction with gay characters - either known, assumed, or invented. A saucy novel about Leonardo da Vinci's escapades comes to mind, and how he almost got roasted alive for soliciting male prostitutes.
I also would like to see more fiction about closeted characters. One of them and his conflict are one of the major themes of my next novel. I think the closet is traumatic and the subtle and not so subtle ways it changes people are well worth exploring.
Good luck and don't forget to post a link to your ebook once it comes out!