Sean, I used to think the same thing about valving... spring rates (Or air pressure) have the most to do with removing the sway bar and getting decent performance out of the setup... valving can help a bit, but it comes down to the fact that you are removing spring force from the sled when you drop the sway bar since the shocks do not "share" springs as connected thru the swaybar.
IMO, the standard float shocks (NON Float-2 or EVOL) are poor choices without a swaybar.
The standard floats get harsh in the last 1/3rd of travel as you have to crank up the air pressure to compensate for the swaybar removal...and the pressure climbs exponentially without the chamber in the last part of the stroke. Night and day diff with the Float-2 or EVOL (if you have std floats and are going to upgrade... IMO... Do the Float-2 upgrade rather than the EVOL upgrade. The Float 2 gives you improved internals (better piston, high volume air cap, neg air-spring) whereas the EVOL only gives you the added chamber volume. The EVOL upgrade was designed as an upgrade for Float-2 shocks. The biggest diff would be from the Float-2 upgrade... But I do understand that the EVOL Looks cooler.