WTF is an XP Blaster?
That Escalade is going to run into trouble towing even just the camper. It may be only 3,200 lbs dry, but once it's fully loaded, you're looking at more than that. A lot more. Don't forget that fully loaded includes any weight you put into the Escalade - passengers, cargo, etc.
There is no good way for you to tow both that camper AND two skis at the same time. Not with that vehicle.
The toyhauler suggestion isn't really all that great, either. A toyhauler big enough to fit two sitdowns and some way of launching those skis is going to be very expensive (compared to the camper) and pretty heavy.
Sorry to be the bearer of bad news, but it's not going to happen with your intended setup. I went through something similar in the past year. I knew I wanted a toyhauler, so I bought an older full-ton dually Diesel truck with an 8ft bed. Then I bought an older toyhauler 5th wheel. It fit three standups into the 10ft garage in the back pretty easily.
But that toyhauler was g'damn heavy. The whole thing (truck, trailer, everything loaded) was close to 22k lbs. Way too much.
I sold the toyhauler and bought a new 27ft travel trailer that weighs 4,600lbs dry. I put the ski and beach cart + hitch hauler in the truck bed now. It works pretty well and tows a lot better than the old 5th wheel.
Of course, even that setup would not be a very good match for two sitdowns.