Oh heck yes. Air tools elevate your wrenching to a whole new level. An impact wrench is a must have tool in my opinion(Air or electrical). 300 beans doesn't necessary get you a lot in the way of air tools/compressor so if you are still needing to add conventional tools to your set then get those first. I will agree with Tractor on the vise grips being nice. I never needed vice grips until I needed them, ya know? Above all, have fun spending the money man.
CJ