Sorry to say it but unless this job is paying lots of money then don't take it. As many have said your husband will have to make a new claim, this could take 3 months to process, your doctors will have to give new reports and in the meantime the money you get will stop.
If you plan on getting fis you will have to wait nearly 5 months for a claim to be processed and during that time you will be just living on your wage, your husband will have his dole stopped so for nearly 4-5 months your income will have to support your family. It ain't worth it I'm afraid unless your income will be massive.