Thanks for the replies.
Well I've never painted a body on the outside so im not sure how it compares to inside. But I was going to use the body for drifting so im sure im going to be bumping into stuff.
I was also thinking of plugging the holes and just cutting out a vinyl of the same color or carbon fiber and putting that over the trunk and I can just make it a basher.
Edit: I painted the body last night a Bright Silver color and I really messed up. Tons of drips and runs everywhere. So I may have to paint the outside. If thats the case I can try bondo. I heard using CA Glue on bondo will harden it as well?