I didn't actually find much info. via google. The 7,000 lbs I saw sounded in the right ballpark for the trailer length and for an older unit. I don't think it would be a lite-weight type construction for that age? Seems like it is from about 2003 - 2005? Appears to be 28' long as indicated on one site.
Of course, it would be good to find the sticker on the unit but even then the dry weight (UVW) and cargo carrying capacity numbers can be misleading. The GVWR would be very important info. to know tho.
This length is similar to our 29' trailer which has a GVWR of 6800 lbs, loaded weight of 6600 lbs and tongue wt. at almost 15% of the trailer wt. Ours is an aluminum framed lite-weight though.