Sherman --- Welcome to the "RV Purchase club", and difficulties associated with same!!! As I've said, I've had 3 --2 in the last 2 years, and hopefully this is it!!!
The barrel chair in the my 2350 (2006) was bolted down with a seat belt. The new "euro chairs" options (which are great) are on a ring which is secured to the floor with a clamp, and immovable when underway. The idea of a table with the chair is a good one -- and not to confuse you further, that's why we went to the 2400 - 2 euro chairs, with a "cocktail" or work table between - is great for happy hour!
I too, researched the bed situation in other RVs, and, while somewhat appealing, the fit & finish in them turned me off. (Sounding like a broken record!) With all 3 RVs the bed has been an issue - I mentioned the corner bed pproblems in the 2350, and with your size, I would be surprised if you and DW would be comfortable - like Bob (rmmpe). With the twin beds, I kept hitting the wall/window, and Linda found the shorter bed a little short, and on a "boys" camping trip a friend (6'5", pushing 300 or so) fell out of the twin! Now, PC has come up with a new style of beds for the Fords, (you can see in the brochure, or Ron's photos) but can't be installed in the Sprinter. So, we got the air mattress --- what an experience!!! There have been many threads on these things, but the short story is they are just uncomfortable. (I'm being kind!!) so now we're going back to the older style, electric sofa bed, and using memory foam to get as much comfort as we can. You're right, each style/size RV has some drawback -- however, I'm hoping this new arrangement is better than a tent! (As far as I'm concerned, the tent is more comfortable than the airmattress!)
Anyway, good luck in finding what you want -- as you know, I'm pretty damn close!!!
Best,
Jack