And yet here you are asking others for advice. Why would anyone who's so astute with their money do such a thing?

If you're telling the truth then you should know what to do already. Read. Learn. Invest as wisely as you think you can. Don't listen to the speculation of others; speculate for yourself. Any time anyone says they know a guaranteed return, be suspicious.

If you've got a decent GPU, get mining. Even if it's not the best, the process will help you understand. Without such an understanding you're liable to get caught up in pump and dump scams. If you don't have a decent GPU, invest at least a little of that $200K in some hardware; you may not see ROI for a while but what you'll learn about cryptocurrencies will be invaluable.

Read the bitcoin whitepaper. Read as many other competing coins' whitepapers as you can stomach. Decide how to invest based on your knowledge, not on the advice of others.