It's a good idea to have a backup stove, I agree.
I had no experience w solid fuel until last year. One thing to keep in mind is that most hand fired stoves are pretty simple. There isn't that much to break on them compared to your stoker.
I came across a Godin Oval Parlor stove last year. I bought it for about 300 bucks and it wasn't used much. It's very simple to use, throws plenty of heat, and needs tending about twice a day. It was maybe 10 years old and looked almost new. I found parts for it, Being it is classified as both wood and coal, it is not sold in the US. I bought parts for it in the UK just to refurb it a little.
I've been using bagged chestnut coal. I tried pea, but it isn't practical. I go thru less than 25 lbs a day (I think)
This stove is an oddball, not very common, and I think there may be many oddball brands out there. The design is about 1860 and it works. I'm happy w it and at 300 bucks it was a low risk decision. Look around and you may find something that will work for you. I was able to get help on tips for my stove here. There are only a few that own it, but they've helped me out a lot.
I also have a 5k generator. That's good for the big stuff like electric water heater, well, septic, fridge, etc. Although none of these things needs to be run on a continous basis. I'm currently looking for an additional generator, maybe 1k or less. I would run this continually for stuff like lights, TV, etc. Use less gas, make less noise, etc.
Another consideration would be a propane brick heater with a big tank outside. Yea the LP costs a fortune and the unvented propane poses health hazards, but in an emergency they work just fine. (try not to massacre me on this suggestion guys, it's just one option that would work fine, not to mention all you do is light it and walk away!!!!!)
I think you should go ahead with your plans, being there are so many options out there. If all you do is get a generator, consider the size and how much petro you'll need to keep on hand. My coleman can go thru 5 gallons in 10 hours. So it wouldn't be practical to run that for a week straight.
Please Keep Us Posted, I'd really like to hear what you end up doing!!!!!