Compressor

Howzit,

I'm working on my body of my Skyline Gtx, hope to be primered by Monday.
I'm looking for a compressor, anyone know what size I should be looking for, and estimated cost?
Is it worth looking for 2nd hand?

It's for diy use only, but i'm hoping this is the first of many projects, so quality and consistency is important.

Thanks,
derrick