Thanks Bob! I may start a new thread on that route at some point. Think 4 days from Scab Creek TH to Big Sandy TH is possible (camps near Raid and Shadow L, then Lizard Head Meadows). My gf did love the Texas Pass loop as a 3 day and it's a great time or car-constrained option.
But that 2000+ ft gain from Scab Creek with a full pack is a rough way to start. When I went to Rainbow a few years ago I got passed by an ATV. He started his hike at the wilderness boundary fresh. Told me "I've done this before".
May send you a PM too - heard rumors of some interesting fishing in that vicinity and didn't want to get too off-topic here.