You may be right. But my theory is that if you can keep the COG down, in addition to the unsprung brass weight i have as well as two stage foams, that the flex will ultimately help. Im never going to do comps or step sidehills, i just want to not get hung up in the rocks out playing. I thought about doing adjustable shock mounts as well to lower the height.
To much flex or too much height? I am trying to do similar but keep the truck at the stock height via the use of taller shock towers(Hot Racing or the eBay knockoffs.) You can run a 20mm longer shock, which has 10mm more compressed length, and still be at the factory ride height and bottom out in the the same position as the stock shocks.
You pick up 10mm of travel without hurting COG or anything else.
Too much flex for sure. With too much flex the truck wants to rollover in situations where it wouldn't if flex was limited.
Obviously the taller height is going to hurt it in situations as well, but you gain ground clearance at the chassis.