Can I run my 40 Amp Range Stove partially on a 30 Amp generator
I'd take a third option here.  You clearly have a place to store fuel and someplace where you can run it so I would suggest a propane tank and stove.  Cheap, very long shelf life so long as it's stored shielded from water.  (The propane lasts forever, the tank can rust.  Note that the tank has a 12 year expiry date--you won't be able to refill it after that, but what you have in it will still work.)
You'll get a lot more cooking per pound of fuel and you very well might be able to use a smaller generator.