check the type of tools you plan to use too
Another suggestion when you are looking, some tools like "DA" sanders take a bunch of air. If you plan on paint and body work and using a sander a lot - look for those requirements. Paint guns can take a lot too if you spray continuously. Most other tools like impacts use less air and are used for a shorter time allowing the compressor to catch up. One last thought.. when checking the tools note the pressures they operate at. Many operate at around 90 psi, that will assist you in sizing. Overall, it sounds like plenty of compressor but check your needs.