You do realize the center shock is a base shock on SRX, same as a SE shock in center. And the fronts/rear are Qs3 only, no rebound and not 5/8'' shafts only 1/2". So they wont hold up to mogul mashing nearly as well with a 580lb++ sled. Also the fact you can only set the front and rear to same setting, not individually. I like to set my front soft and rear firmer many times, cannot do that with new suspension.
1" track IMO will be purely a hardpack trail or lake track...everything else it will be spinning all the time. Heck the 1.25" unstudded is a handfull even on these winders.
I would install a 1.25 rip2 and a team primary for sure.
Dan