Indeed you have made a good choice this year because, the price of BTC is still low to a level were you can buy as much you want and hold for a better future. I will advise you to hold for like 6 months before you can sell because, it will really help you to enjoy a big reward from your business and it will also encourage you to save more money to buy more BTC in future.

Don't forget to store your coin's in cold wallet always so that you will not experience anything that will hurt you in future.