Hello Glen,
You'll find thousands of opinions on this forum. So, you'll have to use your own judgement.
Take a look at the camper and make sure it doesn't look too ruff for you. I can do all my own repairs so the last 2 that I bought needed work and I picked them up very reasonable. Once you use it a bit you'll know what you like and dislike.
Campers that age had metal roofs so they did require as much maintenance as rubber roofs when left in the weather. Which isn't to say they couldn't have problems. You'll need to take your best guess based on your ability.
If you like what you see, a camper that age shouldn't be too big of an investment. If the appliances all work, they would probably cost you about the value of the camper if you could find them used.
If it is truly in good shape then the better for you. If not you might enjoy Kxracer704's posts.
As for weight I don't have the slightest guess. I had a Palomino that was very light and now have an Arctic Fox that is quite heavy. I liked both for different reasons. Our first camper was an '84 Coachmen. It was a well made camper and we liked it also.
Good luck.