A little more for you to think about, based on my experience.
I know you already have the Lance but if this is your only RV and you may think you want to go bigger in the future consider the LB.
A LB Ram gives you 500 more lbs of payload and allows for a bigger camper.
The Lance 850 would be a perfect match and give you a lot more room and tank capacities.
The SB Ram is only a 6'4" bed and makes any 8' camper have a long overhang.
You should be able to sell the 650 pretty easily so something to think about.
I like my SB for the convience but also have a TH when I want more room and tank capacity when camping for a longer period of time.