I have the 26DBF (pretty much the same more or less) and it is almost 32" from tip to end. Living area is 28 or so feet.
As far as tough weight.. Throw out the manuals weight, it will never be that. This does not cover any propane or cargo or water.. So once the unit arrived figure on 1000lbs of crap you'll add and and extra 100 or 200lbs of tongue weight.
Pat, Jen & Heather... Oh yeah and our trained attack trailer cat, Cinnamon
2015 ChevyHD D-Max
2014 Greywolf 26DBH