Stock pushrods. Mine is also low mileage and I'm the first owner. I knew I'd be within the range of the hydraulic lifters, that they've never been sludged up. So even after taking .020" out of the head gasket I am fine.
ARP head studs in most places. I outlined what I am doing in my build thread.
I read through your thread—very helpful and similar to the direction/use case of our jeep. Average capability, above average comfort, high reliability. Capable of the easy lines on the rubicon without body damage, but not a handful on the highway to where driving 600 miles in a day is exhausting.
Two questions about the roller rockers:
1. Did you have to clearance anything on the valve cover?
2. As the 1.7 ratio moves the pushrod closer to the trunion, I was wondering about pushrod clearance with the head. Assuming this is something that you would have noticed while checking pushrod length and torquing the rocker?