It's really too late to do this, even if you think it's a good idea.  If you did it last year, you would have been in great shape.  But the intrinsic value of a Bitcoin is around $1500, and the price is, well, whatever the very volatile price is at this millisecond.  You can argue about whether it's actually a bubble or not, but with so much real estate between the price and the intrinsic value, the entire idea of borrowing to gamble seems like an incredibly risky strategy. 

Next month the story will be, "Irate Americans who took out mortgages to buy Bitcoin can't figure out who to sue for their losses."