well to run air tools youll need a decent size tank. go with a viair compressor, something like a 380 or 480-- they are fast. you can throw anything at em and they keep on running. and they got a good water resistant filter compared to most compressors.
im new to jeeps so i dont know what a arb is but check out suicidedoors.com -- it is a minitruck site but has great prices and you can build your own kit easy.