I wouldn't worry about being over CCC if parked. If you have all your jacks down then you have additional load carrying capacity. I'd be more concerned about the internal structure. If you have laminated floors where you have aluminum studs, foam and a layer of thin Luan over that with just vinyl and have too many people standing in one spot you could get some soft spots form too much weight concentrated in that area.
Stab jacks are usually about 2500 lb load capacity. the tongue jack is good for 3500 lbs or more. No way would you hurt the frame or suspension.