First - Wishing your husband a good recovery - I had a couple of incapacitating back pain episodes about ten years ago, once while traveling alone outside the US on business and another while chartering a sailboat in the Caribbean, so I'm really sympathetic. Never comes at a good time.
One reason a B was attractive to me (of many) was - we both could easily drive it. You already know how fast an simple the set-up and departure is. If switching back to a B = a better comfort level = more trips, I'd say keep the B on the short list.