I'm going to give you the same advice a friend who has had snakes for many years gave me when I started out. Like an idiot I didn't listen to him, and as a result I wasted a lot of money, got very aggravated, eventually took his advice, and now I have empty tanks cluttering up the house.

Get a tub/rack system, either buy it or build it if you have the tools available. At some point you'll want more BP's - they're like Pringles - and long-term it's cheaper and easier, plus you will have happer and healthier BP's - if they're in tubs.