BulletsForFingers

I'm looking to buy a Viair kit for my truck. What considerations should I be making when choosing a kit? I know I want to power train horns, fill tires, inflate things, and possibly even run pneumatic tools. I assume running tools is the most taxing on the compressor. So with that in mind, will I get any kind of decent performance out of any of their compressors with tools? If not, how small of a kit can I get by with for my other uses?

Thanks.