I didn't do a very good job explaining the question. The two decisions are not necessarily connected, or more appropriately, were not connected prior to a little trip we took to look at that Lance 815.
I was pondering upgrading the current truck camper full well knowing we will probably have to buy a trailer some day. Currently, my wife works weekends so there are many trips that are just me and the boys so a truck camper would work well. I figured when she gets tired of that, a tow behind would be in order and towing the boat would be a no go or we would have to take separate trucks.
Then, we looked at the Lance 815 and my wife was talking like it would be big enough. I felt it was smaller than our current one with the notable exception being the orientation of the bed which for the time being would allow all 4 of us to sleep in it. I don't mind trying something out if I can turn it down the road for what I have in it.
There's so many dynamics at play in this decision it isn't even funny.