How about starting with Rockwell's "The Stay at Homes" adapted to what you are picturing in mind's eye, concentrating on the proportions he uses for the two figures.
Your scenic details (a helluva lot less than you describe will get the message across) and clothing, but concentrate on getting his anatomical ratios, even by copying these poses at first crack.
There is no better at non-abstract people than Rockwell to emulate until you get the feel, then can adapt your style to what you learned from him.