I have put many Sprint 8330's on Boost Mobile. You will not have BBM or Push Mail but it is a minor inconvenience. There are 3rd party apps to take their place. It is relatively easy, and can be done in about 10 minutes. Here is the link to the Boost CDMA subforum at HOFO, Boost CDMA
. You will be able to get all of your questions answered and save yourself some $$ by doing it yourself.