Since this would be a short term solution, a gas generator is probably your better choice. Diesel generator smell terrible and you don't want that near your home.

Gas generators need more maintenance and have a shorter lifespan than diesel but that shouldn't matter since long term you would want to switch to another energy source all together.

Just add up the electricity you need and get a generator that makes enough, probably in the 5-7000 watt range.

For cooking you can also get a gas stove. You can buy a smaller 1-2 burner one or a full on stove and just hook it up to a gas cannister instead of the gas outlet in your home.