I think the "Mrs." Harsey can keep Billy boy in check... she could be similar to Paul Sr.'s character and Bill could function as lil' Pauly from the chopper show!! LOL Sdiver could be comical relief/whacko like the youngest brother on the show.
I can just hear it now...
WIFE's character: " DAMN IT BILL....get off the blankety blank computer and get back to work! And clean up this shop and quit goofing off with Sdiver....we have deadlines to meet!"