get it ridable with engine 1st. 2nd then figure out paint and work out all the kinks if anything pops up before painting. clean fuel tank out if need be.. 3rd enjoy what you have done to it.. dont get rid of it..
This may sound silly but take the bowel off the bottom of carb and see if main jet is indeed screwed in very lightly tight. It may of come loose and is flooding out when your trying to give it gas.. double check your mixture screw and idle screw..