So the pulley didn't make much difference, surprisingly. I reverted back to my original pulley and using both my Zirgo puller fan and my old 2100 cfm sitting in the nose as a pusher, she maintained 195-200* at idle, and it is HOT HOT HOT here at 6PM this evening, 93*F and 50% humidity.
So based on a number of recommendations this week from my buddies in West Texas who run high performance V-8s in their offroad rock crawling buggies, I am going with a Ford Taurus SHO fan/shroud combo like this:
Rated at 4500 cfm I can modify to fit my core perfectly and its got a 17" diameter fan and a nice 4" deep shroud. Should do the trick. Thoughts welcomed.
EDIT>>> This is with a medium Moroso restrictor installed. I am going to try the 160F t-stat Jamo recommended again and see how it behaves with the additional fan flow. Probably won't matter idling but might on the road.