Responding to the OP, and for anyone interested: Nominations for the Ultimate Setlist (Set 1) using the Keith era and a 15 song setlist as parameters. The 1977.05.13 provides a best ever Looks Like Rain, and contenders in Cassidy, and Scarlet Begonias > Fire on the Mountain
Song titles are linked to streams at Archive. Here we go:
The Music Never Stopped - 1977.05.22
Sugaree - 1977.05.22
El Paso - 1977.05.22
Cumberland Blues - 1972.04.08
Jack Straw - 1972.05.03
Jack-a-Roe - 1977.05.17
China Cat Sunflower - 1972.05.03
I Know You Rider - 1972.05.03
Cassidy - 1977.05.09
Peggy-O - 1977.05.05
Lazy Lightning - 1977.05.22
Supplication - 1977.05.22
Looks Like Rain - 1977.05.13
Scarlet Begonias - 1977.05.17
Fire on the Mountain - 1977.05.17