Welcome aboard with your "new for you" Sunline! I got a queen bed too in my 1984 F-1850 Fifth Wheel. Just can't walk around it though. Ceiling height over the mattress is 30" in the sleeping nook. Considered a small camper with walk around bed like yours, but chose a small Fifth Wheeler for better towability at higher speeds. Mine tows rock stable in the wind, around tractor trailers and lane changes at 70mph no problem. You got photos you can post of your new rig? This bunch here at SOC likes pictures!
Current- 1994 Sunline F-2410 Fifth Wheel (Modified to Gooseneck Hitch)
Current- 1992 Sunline C-951 Truck Camper
Previous-1984 Sunline F-1850 Fifth Wheel (Gooseneck Hitch)
Tow Vehicle- 2015 GMC Sierra Double Cab 4X4 3500HD Pickup