Pat,
On the driver's side hinge post, double check the distance between the hinge mounting bolts between the two sides. The FAM has those dimensions. It may be that your cab has spread a bit on the front. You should be able to pull it in before getting things welded completely, but it'll be impossible afterward (don't ask how I know that
).
Otherwise, looks good. Your pic of the rear pillar meeting up with the repop rocker is pretty typical. The fit is less than optimal. I think that's why GM called out for welding the rocker along the front of the rear pillar and rear of the front pillar.
