"my goal is to capitalize on the ups and downs of the market, sell high and buy low"

Don't mean to be a dick, but you do realize that is what all stock market speculators say right before they lose it all, right?
If you speculate for a living, be it on wall street, real estate, or BTC, eventually you will get your head handed to you unless it's a rigged game and you've got a seat at the top of the pile (think wall st. investment banks).

Be careful and have the humility to realize that market timing (which is what you want to do) is impossible to do consistently. If I were you I'd start a business that accepts BTC. That's a better way to achieve your goal IMO.