At the Goshen rally in June, one of the Lippert's rally specials was the 3.0 Ground Control System. We had it installed on our 30' Elk Ridge and LOVE it! It's just like the Level Up, except it's electric,
not hydraulic. The price was around $2,700, we still have the rear stabilizer jacks, and use them to help stabilize the coach. I don't know if they would just sell 2 of the jacks or not. Also with the length of your rig, I don't think they recommend the 3.0, and push for the 6 point Level UP. Here is a link to the Ground Control System:
http://store.lci1.com/ground-control-3-0-5th-wheel-aftermarket-kit
You might contact Lippert and get their input.