Yah you can do that. I use a 10amp Raptor, it can do 60watts with no problem and is tiny. The thing I like about it I vape about 35w, it is middle of the road for this board. It doesnt have to work hard in that range, never gets hot, vapes great. I paid under 9 bucks from Mouser for it, they are a good option.
Forgot, alot of guys are building mosfet box's. They are really inexpensive, limited to battery voltage but a good project I suppose.