FWIW, I just checked my AHC pressures. Unknown age on my stock LX (rear) springs on an 01, 200K miles. No spacers. I also removed my jump seats, but had a full tank of gas and loaded up the rear hatch area with about 100lbs. of additional weight.
My front pressure was 6.7 and rear pressure...
With your sleeping platform, you put weight behind the rear axle. Think Porsche 911 engine placement. This puts essentially all of the weight on the rear springs. Even with spacers, you may still be above spec. To get back into spec, you would need beefier springs, or consider adding airbags...
Baseline (typically means) when you change fluids/filters/etc to set a known service mileage on the things you don't know about due to past service history, or want to install your brand-specific fluids/filters/etc. In reality, the sky is the limit (or your credit card limit) since you can...
OK, I'm a realist from experience with an undertone of optimism and a pessemistic cherry on top.
I cranked the TB adjusters to reduce the pressures to 6.7 and 6.2 and went for that placedo-induced test drive.
There is a difference. The ride was more compliant (some would say softer) while...
With proper ride heights, my front pressure sensors won't drop below 7.4. The ride height sensors are an average near zero, and the front delta is 0.3in. Rears sensor reads 6.3, and I don't run the 3rd row seats.
Any suggestions? I'm all about the comfy ride. Fluid was flushed 2k miles ago...
Let it be until you need to re-adjust. Then you can chase down and fiddle with the height sensors.
I run a ~1 inch delta between the front height sensors. Everything runs and works fine. I'll adjust it (like you may be tempted to right now) when "the lean" starts to come back.