LOL - My suggestion would be to go for ios first. The reason for that is my understanding (purely on what I have been told by folk who have written games) is that :-

1   Folk on android are used to getting stuff for free and don't really want to pay for anything
2   More importantly, write something on android and it is likely to be reverse engineered within a week
3   If your app is reverse engineered then anything you have within your app to access your C2 account will be available to the hackers :-)

With ios people are used to paying, and most can't easily reverse engineer your code (there are always some).

Whatever you do though don't put anything (userids, passwords etc. in your code that you would not post on an open forum).

Regardless, best of luck, I hope you create an amazing game. :-)