I'm using Elka Stage 3 all around on mine. Love them! They can take a hit. I had them built for my weight and riding style, they came out a bit stiff but it takes a jump like you are landing on a cloud.
Just my $0.02, I think I would do a Radiator relocate, tires and snorkels and maybe some clutch work for the mud, why do you need $1000 shocks for the mud? Stock shocks are more than adequate. Just saying.
I have Stage 4 Elkas, wonderful amazing shocks, but if you are into mudding I wouldn't put expensive shocks on unless if you have money burning a hole in your pocket. Shocks will do nothing to help you get through a mud hole, invest in snorkels, rad relocate and tires.