12fretter - First off, my hat is off to you for doing your research. A lot of folks don't go to this level. *respect*
For the casual reader: With appliances like freezers, or anything with a motor, you have a Locked Rotor Current that can double, triple or more the amount of cold current amps you need to start a device. What this means is when you have no power, you plug in your "needed" items and fire up your generator, if it can't ramp up to the required number of amps of draw, it will fail to be able to start the device and could flat kill the motor on the generator.
One of the problems with home owners and small, portable, plug in generators is that people don't take into account their amperage needs and that these devices can induce power back into the commercial line power which can cause severe problems when the power comes back on.
I don't expect this to be a problem with the OP.
12fret - I assume your equipment all runs on 120 and are not 240 volt devices? Because that will up your overall size need on the generator.
I have seen just about every man portable generator out there over the years of power outages and storm duty.
Briggs & Stratton and Honda definitely lead the pack when it comes to home purchases in this area and I can recommend both as being reliable, tough and dependable when the lights go out.
Like some purchases (gun safes of immediate interest to this group) buying a generator is wrought with peril because if you spend the cash and don't get enough power, you will feel slighted. Also once you get in the "comfortable habit" of having access to power when no one else does, your family will soon want you to stretch that to other circuits in the house. :roll eyes:
While you have identified what your "thought of" peak demand is, you might want to consider doubling that just based on the acceptance of comfort factor which will definitely kick in.
It's not a cheap investment. I think our unit was around $3,300 which I got on 12 months no interest because free money is cool.
I poured the concrete pad myself and had a buddy do the natural gas plumbing, so I was out about another $300-$400 there. The installation of the Automatic Transfer Switch, which came with the unit, cost me another $200 worth of bar-b-que food and drink because I have another buddy who is a licensed electrician.
Having said that, the unit & price incurred has paid for itself 2 dozen times over when the power went out and I wasn't home to hook up a man portable unit. It adds value to the house, provides sound piece of mind to me about the safety/comfort of my gal and the dogs if I am not home and gives me solice should anything severe happen weather or zombie wise.
The thought of getting a generator is a great one. Analyzing the immediate needs of your household is an excellent first step. But make sure and build in a safety net for yourself in the event of "comfort" because I can assure you - when cold and dark comes, you are going to be MOST happy you did.
If I can offer any assistance, please hit me up. Good luck with your search.