4 or more - B190, no dice!
If you have 4 people or more, then IMO the B190 is a no go. TOO cramped. Think trailer in the same length and you have LOTS more functional room.
I understand the psychic bond with the old mini MH, but there are a ZILLION better options these days.
As others have mentioned, there are mainenance issues with one more drive train, there are space issues, there are all the normal trialer issues since it is a trailer with DT - plus when you get there, what do you drive??
I went through the same/ similar mental gymnastics before SilverToy became a reality for us. Having a TV helped for us, but the real nut that I couldn't crack with a MH perchase, was the end station transport. With a small/medium MH that becomes a limit also. Getting to where you want to go and being stuck there ( with kids!) can be a huge PITA.
Look for a really good older ( possibly dedicated TV) and an older TT - AS or not - and GET OUT THERE!
Just kidding, but think about this carefully. Glad you are here and raising these issues BEFOREHAND! It can get really costly if you do things after the fact.