Lite 5th wheels

You can also look at the KZ 1500 series, however, regardless of which lite weight make or model you chose remember that you are making certain concessions when buying a lite weight. i) wall construction is normally thinner i.e.: 1 1/2" vs. 2" means less insulation and strength. ii) construction studs are based on frame and not the spaced at regular intervals i.e. 16' iii) cabinets are less as the wall integrity is compromised to save weight. iv) awnings are not always anchored in a stud, but, rather only in the skin of your trailer. All are good and functional but you do need to understand the compromises. PS: with a 2500 series I would not be overly concerned with having to get a light weight trailer.
Good luck!
GPG