I had that exact model for eight years - bought it new in 2002. Got a lot of good use out of it. Pretty low-end camper, but we liked it. Yes, light weight - nice to carry.
If it has not been well-maintained, it will give you leak problems -- so check leaks carefully, then check for leaks carefully again, then once more.
I had no mechanical issues with it ... it had no A/C and crank jacks.
I sold it in 2009 for under $3000 -- so your price is very high for the Angler. If you get down to $3000-$3500, it's a good buy. I'll say this once more, check the maintenance, the caulking, the windows, and everywhere there is a seam. I'd go a bit higher if it has power jacks that work perfectly. Some don't ... even with power jacks, not more than $4000 would be a good price if everything else is top-notch and it has no water damage anywhere.
I had some seam water intrusion problems with mine in that regard, but stayed on top of it always, and it served me well... not everyone does good maintenance so that's my only warning.
ON EDIT: It's wood frame ...
Monkey44
Cape Cod Ma & Central Fla
Chevy 2500HD 4x4 DC-SB
2008 Lance 845
Back-country camping fanatic