BTW the dollar is going to tank in the next couple of years. The stupidest thing you can do is buy dollar-based securities. If you MUST invest, buy GOLD.
And no, don't pay your taxes YET. I would actually invest in hiring some artists and developing even MORE apps. Maybe just outsource their development. It can be a lot of headaches but if you were able to code the apps yourself then likely you can extract decent work out of shitty Indian or Chinese consultants.
Or, find some people here in the states and convince them to work for you.
Keep growing your business. Become a player.
Or, retire to a cheap country and fuck girls and and enjoy life.
No joke.