Gas fridges are economical but they tend to have a very small freezer compartment. Also they cost substantially more than an electric one - the economy would come if you were going to be on solar - the cost of the extra kit to power an electric fridge would add a large chunk to your solar costs.

True, they do work hard in the summer - also you'll need a constant power supply - a generator isn't really a good option.

If you're due power in a month I would be inclined to muddle by somehow - get a big ice box and some packs of ice to keep things cool and persuade the kids they don't need a constant supply of ice lollies!

Nigel