First of all, I did do a search but couldn't find the answer. Need some advice - I have decided to add an air compressor to my garage to power the following tools: impact wrench (one powerful enough to get ANY mower blade off without a problem), tire filler, compressed air gun to keep things clean. My question is: How many hp and gallon compressor would you guys recommend. I've got my eye on a 3.5hp, 25 gal Craftsman Professional portable air compressor. Will this do what I need it to do? I don't like sissy stuff cause I don't like to have to do things again because I didn't do it right the first time (includes purchases), especially from being under-equipped for the job. Also, are there other things a compressor would be useful for (excluding painting because I don't know how to paint)? Thanks.