Guru and a Prime Rib

T-47

I was looking for advice regarding a cook I am doing tomorrow. I am cooking a 14-pound boneless Prime Rib. I have a recipe that I did last Christmas on my WSM for a Herb Crusted Prime Rib. I would like to try it on my large BGE this time around.
My problem is that I have only used my BGE for Trex steaks and low temp (225) guru cooks. I have not had much practice with holding lower temps on it and don’t want to screw up this piece of meat. Can I use my Guru for a cook of 350 degrees? Or is that too high of temp for it to maintain? If so, do I just start it the same way, and wait until it hits that temp to put the meat on?
And would I use the plate setter? The Prime Rib I cooked last Christmas was bone in and smaller, but it came out just incredible.
As always, thanks for your help and advice.

The recipe is here if it makes any difference on the BGE. http://www.virtualweberbullet.com/ribroast1.html

BBQBluesStringer

The BBQ Guru can hold 350 degrees just fine. I would use a plate setter and be sure the probe wires are shielded by one of the legs. Treat it just like you do your low-n-slow cooks. Bring it up to temperature and toss the meat on.

T-47

Anyone have an idea about how long a 14 pound prime rib will take?