Thanks, LoneWolf for the response.
If I press the skinny pedal and hold the rpm at 1250, the A/C works great (vent temps around 45°). So, since I'm having poor A/C performance at idle, should I just add a condenser fan? Or is this a combined issue of the compressor not pulling the low pressure down AND the lack of airflow across the condenser? Driving down the road, the vent temperature will drop to around 40°, but when idling, it will only do around 60°. I'm not too mobile, so mostly just sit in the truck and let the wife shop, but at ambient temps we've had lately (100+), it's tough to sit in the truck without good air.