this is kinda extreme
just leave a question here, we will try answer as long as we can

Hmmm... Which should I build 1st. Below is the list I have in my store room now.

1. MG infinite justice
2. MG 00 raiser
3. EX arc angel
4. MG wing custom 0
5. MG death scyte Hell
6. MG sandrock
7. MG shenlong
8. MG heavy arms
9. MG force impulse

Though this is posted in the wrong thread, i'll just answer it for u since its straightforward.

With exception to certain brand, in general avoid using spray paint u buy from hardware shop. Those paint r meant to be apply on harder surfaces like wood, metal, etc, even if it stated plastic its generally for harder plastic type (lego for example). Gunpla plastic is just too soft, the chemical in some of those type of paint is just too strong and could damage (melt) gunpla plastic.

Note that i said with exception to certain brand. The only other brand of paint that will work that i know of is Krylon and the only places i could find them is in Ace Hardware, regular hardware shop may not hav em. If u do insist on trying out different brand of paint, pls spray it on the runners 1st n c how it turn out.