Release order, simultaneous cross-platform release

I’m getting pretty close to finishing my game for android and the swedish market. I’m not too far behind on an english version and an iOS release (which seems pretty forward to build as soon as I have the equipment),

My question is, what are the pros and cons to releasing an android-only swedish release first and work on the english android and full iOS release while that’s out as opposed to waiting till everythings done and releasing everything at once?

My thoughts were it could be good to release to a smaller market first and learn what happens and also get more testing and an earlier chance for ad revenue before the big global release.

What are your thoughts?