I'm going to go off on a tangent and say get an air compressor. The 15 amp/ 2 hp (formerly overrated to 5 hp by sears) oiled combo with a few gallon tank is a pretty standard size. You're going to want a "tire inflator" anyway, go whole hog.
This is something you can get used, but you'll pay near new prices. They hold their value. This is also, IMO, something you can get chinese from Big lots or HF.
Watch for the trap of a many item set that includes stuff like twenty tiny ignition wrenches you're never going to use, and redundant hex wrenches. Often consumer wrenches top out at 19mm/ 3/4" as well, so figure out how you'll go bigger. I'd get a 1/2" impact socket set (even if you don't have an impact wrench) that goes up to 30mm or even higher; bigger fasteners you can usually get in with a socket. Naturally if you can't, you're going to need some huge wrenches for stuff like taking lower control arms off.
Consider your OBDii needs, whether you'll borrow the scanner at autozone, get a code reader only, or something that does live data/ connects to your bluetooth etc.
For storage I worked for the longest time out of two hand boxes. This was also my street kit, my junkyard kit, and my honey, I broke down, bring my tools to *** kit.