to strip the paint... here is the best and easiest way instead of sand blasting:

go out and get paint stripper in a can. costs about 8-15$ at any hardware store.
follow the instructions very well...
let the stripper sit for about 15 minutes, then wipe off and rise the frame with cold water. towel dry. total time to strip a bike is about 15-30 minutes.

regardless, wear latex gloves underneath rubber gloves, don't touch your skin, keep a bucket of COLD water around and most importantly wear long sleeves, pants and protective eyewear.

Cause if any of the paint stripper gets on you, lemme tell you the chemical burn is not pleasant.

If you are gonna use rattle can paint to paint your bike, 1 can per coating... 2-3 should do the job and get a few cans of clear coat.... don't forget to wet sand between coats... Each coating should take a minimum 1-2 days to dry.

Have fun.

edit: took out all gender references just for cc700 BWAHAHAHA