A good home AC is around 5-7 CFM @ 90 psi. Heavy use with some tools may require a minute to let the tank re fill. With a 30 gallon tank I can run my impact no prob. I would imagine you could get by around the house with a smaller tank and less CFM - just have to let it refill a little more often.
Some of the bigger 115V AC's really need a 20 amp outlet. A 230V will work out better if you have an outlet, but they are usually a little more expensive than what you may be looking for.
An inline filter is a really good idea.
