You know, rwc, at one point when I had my old Jayco I thought I might end up with a hybrid next. But since it will shortly be just the two of us, we didn't go that way. Given your kids' ages, you might. Who knows?
BTW, is your tow vehicle a Suburban? It looks very much like mine (the back end of it in the picture of your popup on the campsite) which is a 2005 LT. I have a picture of it on page 2 post #23 of this thread with my Aliner hitched up.
I want to ask some questions about your set up. In your picture your back end of the popup looks a little low and the front a little high. Here is they way I back in and level off before setting up.
I back in close to the driver's edge and then get out and put my bubble level across the front roof to first get things right side-to-side. I also carry some square pieces of 1" board which I then stack up in a slight ramp so that I back the LOW SIDE (driver's or passenger's) tire up onto the boards until the side-to-side is level. (experience will teach you what bubble angle needs how many boards). Then I put the vehicle in park and chock both wheels on both sides. I crank the front wheel down far enough to lift the hitch off the tow vehicle ball and then pull the vehicle forward to get it out of the way.
Next you need to level it front to back. Again the bubble level goes on a side roof and the front wheel gets cranked until the bubble says level front-to-back. Then you drop your stabilizers front and back to reach the ground and then you are ready to raise the roof. Your stabilizers are not lifts. You need to adjust all four down to the ground so that they reach it and maintain your level position. Maybe the 1992 technology is not too friendly but all 4 stabilizers should be adjustable (have to be).
If boards are too basic, some folks like to use a Bal Leveler
http://www.amazon.com/BAL-R-V-Products-Group-28050/dp/B000BH5MAA which both lifts the low side and also locks/chocks that wheel at the same time. This might be a good investment if you size it to also possibly handle your future hybrid. For stabilizers my old popup had scissor levelers underneath each corner which are easy to adjust to reach the ground each time
http://www.etrailer.com/Camper-Jack/Ultra-Fab-Products/UF48-979002.html . If you go with the scissor jacks, get this little fob
http://www.etrailer.com/Accessories-and-Parts/Ultra-Fab-Products/UF48-979005.html so that instead of cranking the 4 jacks by hand you put this in a cordless drill or torque wrench then all it takes is squeezing the trigger 4 times to get them down and up.
Again the goal is to have the frame level side-to-side and front-to-back before you raise the roof.
Not sure I understand what you mean about the bunks were like sleeping in a bowl. Aren't there poles underneath the bunk corners back to the frame to support the ends and level the bunk as well? We had a 6" thin sheet wood on the underside of our bunks that were just STAPLED over the seam of the two big side boards that extended to the sides that body weight in the center of the bunk had stressed so I reinforced those 6" boards on each side with short wood screws.
Bama Ed