You have a huge initial investment and I am sure you will be able to make good profit out of it. I will suggest you to start arbitraging because it is the easiest way to get profit in trading. Bitcoin is being traded in more than 30 exchanges. Just go to coinmarketcap website and you will get the entire list.

You will see that the price of bitcoin is different in all the exchanges. Some will have little differences and some will have huge differences. So you can buy from one exchange and sell in other exchange based on the price difference. The main catch of arbitraging is that, you need to have huge investment to start with. Try it and do a little google search. You will not regret.