BTC isn't like alt, its need a time,so you better just remember your wallet address and private key and where you saved it
Next few years, make it a great gift to your grand grandson
no its not verry recomended to buy bitcoin now because as you see bitcoins value is still freaking expensive about 7000$+ and it is still going up but if you have a lot of cash and wont even mind the price, then go yet you can always recover your invested capital soon if you have the patience to wait. though probably bitcoin will still expected to rise further until it reaches its new all time high that is expected to happen before the year ends.