Pic sorta my inspiration.>>6716294
11v lipo might eventually burn out stock motors. I don't know for sure, so do more research.
Vinyl dye is the best. It dyes the plastic, so scratches won't reveal the original color unless they are deep gouges. Otherwise, standard painting is like any other paint job: clean and sand, prime, paint, clear top coat. There's a million tutorials on the youtube.
Chinese accessories are okay. If you're paying $2 a mag, and $5 for a hundred darts, it's entirely worth the trial run IMHO.