It's an interesting start. I'm guessing you mean informal feedback, rather than posting a review?
* It's an intriguing setup, but I'd put a little more emphasis on character and plot in chapter 1, rather than focus on the premise and backstory.
* I do like the length. Opinions may vary, but I think 1000-2000 words per chapter works best for books you read online, with a sweet spot in the 1200-1500 word zone.
* The sudden shift of point of view is a little awkward. I shift POV a lot in my stories (and I mean a LOT) but I think it's preferable to make the shift between chapters rather than within them -- particularly if you have short chapters.
* When writing first person, (and I've done this myself) there can be a tendency to begin a lot of sentences with 'I'. It seems like a very small thing, but if you mix it up a little it can look a lot better.
I hope that's helpful. I'd be interested in see where you go from here!