All I can say is "WOW"!!! The effort you put into your reply is nothing short of amazing. I thank you for that. With hyperlinks no less. I should have sent you my credit card as the only thing you didn't do is order the parts for me.
(Or install them I guess?)
Originally, I wasn't planning on getting into the oil pan, but after your comments and further internet review, I now see that it's really necessary. My truck is a 4WD which makes the pan pull more complicated, but not too bad. I assume that I should also replace the O-ring from the oil pick-up to the pump since I'm already in there. Summit sells this O-ring from Fel-Pro. It was the only one I could find on their site.
This truck only has 115k miles on it, but as ls1mike mentioned, I'm also thinking of replacing the valve springs and seals. Based on your experience, would you recommend this also? Would likely use the GM Performance blue springs rated up to around 0.570" lift. https://www.summitracing.com/parts/nal-12499224
Additionally, I've ordered a Top-Side Creeper to tackle this job after seeing your review. My back isn't getting any better and I can't believe how we could live without it before! This thing looks amazing.
Once again: Thank you so much for your excellent advice. It's blatantly apparent that you know these engines at a Master level.
As info for future reference. This parts list along with a few others that are required added up to around $1100.00 give or take a little bit. Can't imagine what the labor would cost??? These are all TOP-DRAWER parts. No questionable third world aftermarket stuff.