I've got an RV repair guy coming out next weekend to assess the roof. I really do not think it is that bad. There do not seem to be any soft spots. I think there are just a few small areas where water is wicking in. So a good sealant and we are probably in business.
What I did was to remove the plastic guard from the bathroom crank up skylight. That is what allows me to reach in and feel the insulation.
I bought the camper. So if it turns out there is more there then I thought, I suppose it will be lesson learned. But, I really do not think it is going to be that bad. I would not have bought the unit if it seemed like the roof was in bad shape. But I will admit I am not a professional. And for the price of 3500, it did not seem like getting a pre-buyers inspection was really need. I suppose every used purchase is a bit of a gamble.
No matter what it needs, I will get it fixed, and will enjoy the unit. Even if I have a little more money in it then I would like in the end, it will be okay.