Maybe I just will sell everything to BTC and be done with it, still not sure yet.
It makes much more sense to keep the 0.15 BTC instead of paying it in interest, and exchange your altcoins for Bitcoin directly. If you really want to speculate on altcoins again, see these depressing graphs first 
Yeah. I'm just going to exchange everything into bitcoin in the end.
Better to be informed before making any kind of decision.
Thanks for the graph, will look to over it, and I'll decide if I ever want to speculate on altcoins again.
Thanks to every one who responded to my post, got some info out of it. I'm locking it now.