From your list I have had no experience with in app purchases or client side sql. I had a fair amount of trouble with push notifications on android (callbacks

From your list I have had no experience with in app purchases or client side sql. I had a fair amount of trouble with push notifications on android (callbacks not being called etc), but those issues were eventually resolved (and had no issues with iOS). Everything else on your list I found much simpler &a quicker than working with the native platforms