Air nailers and small home tools are what pancakes are for. Think, hard wood floor installation, trim, roofing, ect...
The only wrench I'd definitely like to run is an impact driver to run the lugs off and on the car and tractor, with the occasional attempt at freeing locked nuts and bolts. And I don't do any of that frequently. My preference is to get just enough tool to get the frequent jobs done, and let time, effort and muscle make up the gaps for infrequent tasks. I'm leaning more towards the small compressors than original ones I mentioned in my first post that I suppose I thought were medium ones, which probably couldn't handle the big stuff anyway, but give up a lot of portability.
You'll be fine with a 6gal. If you get the impact get one that's 400+ ftlbs. Even though lug nuts are torqued to 125 or so, a 250lb wrench won't usually break them loose.
