Every situation where you camp is different therefore if it is just an overnight I might just one scissor jack and the stabilizers. For extended camping I use even between the scissor jacks and front stabilizers extra stabilizer support midway. My TT is 31 ft. on a light weight frame which flex a bit. We are both not heavy but even if a dog jumps of the couch you will feel it in any TT or 5er. RV don't have a solid foundation. Every person has a different comfort level how they like their RV setup.
Please note! Stabilizers are for stabilizing and shouldn't be used as a jack.
Those scissor jacks also come in handy with a tire change. 8 or 10 Ton hydraulic jacks work as well, the weight between them are minimal.
2014 Ram 1500 CrewCab 4x4 5.7 Hemi 3.92 Rear and Air Lift 1000
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ALJO 'Forever Young @ Heart' provide on their travels Music Entertainment to Senior Care Homes