Can a honda iAVR generator safely run a computer

The 3 hp pump full load amperage should be 230 V 3910 VA x 125% since this is the largest motor 4887.5 VA.

The 1/2 HP would normally be 115 V 1176 VA.

3 refrigerators / freezer total 4320 VA for a total of 10,383 VA. I may be a bit over on the fridge/freezer size since I used 80% of 15 amp x 3.

I would not go lower than a system that had a peak rating of 10 kW but a continuous wattage closer to 7.5 kW should work.

Watch out. Some generators list their peak rated value and some list continuous rating trying to make a smaller unit look like a deal.

I have a 8.5/13? (peak/continuous kW) that runs 2 wells (3 hp & 1.5 hp both 230 V) 2 fridge/freezers, all the lighting in the house and barn and power to run the wood stove fan with some reserve.

The generator you linked to claims to need 4 gallons of fuel to produce 9.5 hours of power at 2.5 kW, or 23.75 kWh. That is about 6 kWh per gallon. At $ 4 per gallon, your fuel cost is about 67 cents per kWh.

In other words, you would spend about $ 16 per day on fuel to average 1 kW. That cost does not include lubricants, maintenance, depreciation, nor the hassle of refueling the generator on a daily basis. In most places, this fuel cost is much more than the retail cost of the electricity produced.