If you only want to invest for a couple of years, then i would recommend moving to another altcoin with a nice future, that way your investment would grow faster.
Yeah even though I'm really support someone to invest in Bitcoin, but in this case @OP looking to earn 10x in couple years which is high unlikely to happen if he invest in Bitcoin, he might only able to earn 2x-3x. Except he want to "gamble" by buy Bitcoin with leverage.
Since he expect to earn 10x, he should expect their capital go down 10x too.