RE: I can use a power drill off of it, my rotozip for cutting rusted exhaust
bolts, a small 110 vacuum cleaner,

 Don't count on it.  Unless you have purchased one of the very expensive
inverters that provide a near perfect sine wave output you are going to find
the power/effectivness of your power tools down noticably.  BTDT with my 700
watt inverter.  The tools will work, but not the same as from shore power.