I suck at trading in volume. I prefer just buying BTC and maybe some alts with money i can lose and check later on in a (few?) year(s).
Years would be good if you are into long term investment, but you don't only hold that for years, aside from that, you also need to ensure you have a target amount to sell your bitcoin and altcoins so you will not miss the opportunity, the best time to sell is when there's a bull run, so aim high as everything possible when there's a bull run.