re: Generator Question

My 4 ton AC unit runs at 12.3-13.1 amps. The surge is what you need to compensate for. Most 4 ton units are around 115-120 amps inrush. You can get a soft starter to drop the inrush around 60% though.

Icebox and freezer will be around 350-500 watts each with a small surge for both. The window unit power draw will depending heavily on the size, but you still not talking about a huge draw.

Ideally a good running load is about 60% or lower, so around 4,200 watts to maintain longevity of your unit and allow for certain temporary power draws (microwave, dishwasher, etc..) some people will tell you 70-80%, but I'm more comfortable keeping it closer to half.

You really shouldn't have a problem running your whole house minus any big 240 loads. Just be smart with load management.