Good decision you take . Bitcoin is the best way to make some good profit with a safe and secure investment. But this the best decentralized eco system in Crypto industries. But one think always remind that the investment will safe and secure till it's on decentralized system but it will not be guaranteed when you use a centralized exchanger for holding it specially for long term.  So your investment choice and strategy all are good but kindly change the platform from centralized to decentralized system for holding it