Reading through this again I realized I never did a follow up. I got everything reassembled. And after putting roughly 1,000 miles on it all and measuring hub temps, they’re a consistent 110-115, a little warmer than passenger side but totally normal.
During reassembly, I initially had a difficult time getting the Warn hubs in because the stub axle wasn’t perfectly centered in the spindle. I was able to get it centered by turning the steering wheel and raising and lowering the drivers side (with the jack), to finally get it aligned. Once it was lined up, the Warn hub slid right in.
The spiral locking ring was a booger to get in but I found that you just gotta be patient.