Spraying Bumper with Cellulose Paint

[sierra20]

Hi evreyone im new to the site.
I've just got a question about spraying a bumper on my car. I have done bits of spraying, and have refurbished a few sets of alloy wheels, so i thought i would have a go at doing my bumper as its pretty stone chipped.
Is Cellulose paint durable enough for it with a 2 pack lacquer on top, how many coats of paint does it require, and will it need a plastic primer if im not cutting back to the original plastic bumper?
Help would be much appreciated.
Cheers guys.

[MGBLACK]

I'm fairly new to this site and new to resprays, but I'll put my two penneth worth into this. Can you not use 2k with the plastic additive, the finish and durability is better and as your spraying such a small section, the fumes may not be so much of a worry as spraying an entire car. Just a thought, if not, cellulose is usable in such circumstances.