down to bare metal; few questions for next step

all i have to say is if you live in Ohio or any place out east and your truck is bear metal i would prime b4 doing anything. ever heard of rust. it will bit you in the ass. then do what John said. me personally i always sand b4 layin bondo or anything that will be layered.

rust; hince the reason to taking it to bare metal and doing the following steps