to give you my experience, lol .
My kick has loose springs lots of travel on a set of 33.12.50s IFS,
I have front and rear lockers and 4:24 low box.
climbing this hill
THis hill was steep and I bonced all the way up. a standard range rover stock suspension made it look easy, The range rover was stuck later in the mud which i had no problems with,
What im trying to say is to account for every type of trail is differcult and I think i would have done a lot better if i had some harder shocks.
I am now tempted to order adjustable shocks for this type of hill climbs so i can stiffen them up when doing steep hill climbs.
take it all leave it