i'd just save up the money and sell one of the extra blocks you got laying around. once you get the money right you will be able to actually do something with it. cause right now, you're not doing much.

however, you COULD start getting parts together to go for boost. ie, buy the parts you want to build the motor, and have them sit in your room till you got EVERYTHING. then do it all at once. instead of little by little over a long ass period of time.

if you decide to boost the b20, might want to think about getting it re-sleeved. cylinder walls are weak and will crack with any boost past like 8 psi.