Yes it is a trailer and a camper
The state of Alabama does not require a title for a 1990 pop up camper. A title for a pop up camper that is more than 20 model years old does not need a title. If it is newer than a title is required.
We have a 2002 Rockwood pop-up camper which we bought used and are in the process of selling it. Should we have received a title when we purchased it in 2003?
3770lbs
The tongue weight of a 1999 Coleman Santa Fe pop up camper is 183 lbs - "hitch" weight, the specs call it.
1000#
Some brands do, some do not.
1200 lbs.
That would depend on if someone is offering a replacement pop-up canopy for your Winnebago camper. A very good place to check for this would be eBay.
Yes it would be fine.
2390 gvwr
1000 feet 2000 wide.