cam upgrade

My springs aren't worn. I've only got 400 miles on the motor.

The 926's have a seat load of 109 @ 1.8" and a rate of 415 lbs/in.

The 911's have a seat load of 122 @ 1.9" and a rate of 373 lbs/in.

So from that I gather that the 911's are softer but must be a little taller since the seat load is great for a taller installed height. My stalled height is 1.88". So w/ the 926's at 1.88" my seat load is less then 109.

Given that info, what do you think? Am I ok w/ a stiffer spring but less seat load or would you rather see a higer seat load?