I see Smokin's 4 stage method as searing at the end by setting the smoker at 375* for 30 minutes. I've followed the method you've mentioned by smoking the prime rib, letting it rest for 30 minutes (No FTC but tented) then searing in a 500* oven for 6-10 minutes. Turned out great. I'm using this method again since my smoker only gets to 300*.