There are a lot of things that you can be frugal and cheap with. Gas connections are not one of them. If you have to come on Reddit and ask if there are any code violations that you should be worried about. How are you going to handle the transfer switch from the electrical panel to the generator? Do you even know how to do that without coming to Reddit? If you are using the generator, it is going to be a lot more gas than any stove would require. This is not a DIY unless you are in the trades and know exactly what you are doing.