Your plan of sharing business logic sounds good. We don't currently have any recommended way to share code between web and iOS/Android, although I'm hopeful we will at some point in the future.
I'm actually curious - how does the React (Native) team feel about such efforts? Initially RN was pitched not for cross platform app development, but "learn once, write anywhere". I guess this is the reason why sharing more code between RN and web hasn't been prioritised by the FB RN team, but do you see your team wanting to encourage this?
