Springs rates between Icon and Carli?

[Ice Cream Sammich]

I still cannot decide if I want to get a 1.5" spacer or a new 2.5" coil for my 2016 F250. I will either run 295/60r20s or 295/65r20s depending on what I decide to go with. If I go with the full coils, I have a few questions, What are the spring rates for the stock F250 with camper package, what is the spring rate of the Carli coils, and finally, what is the spring rate of the PMF (Icon) springs/?

I believe that the stock F250 coils are 6000#s.

I want something at least this heavy due to I will be adding a Road Armor bumper and M12000 winch in a month. Does anyone have any other ideas?

Thanks all