I can see how Birth of the Federation was in inspiration but it looks too similar to the setup. So many things are the same way and you might have some problems if they decide to think this looks too similar to the original.

I don't worry about that. Indeed the game was born as Birth of the Federation 2 some 10+ years ago, but the entire game was redesigned so that nothing is borrowed from Birth of the Federation except some of the mechanics.

Second, the game is free and open source, provides me no revenue. It's on Google Play for more than a year.