Only my third (multi-day) trip so far this year and think I've settled on the following route: Crabtree TH to Buck Lake for the first night, Buck to Big Lake for the second night and then back to Crabtree on Day 3.

I always prefer a loop (even partial loops) to straight out and backs so I tried to "loop" this as much as possible. I spent some time in Crabtree area last season but was hiking just a bit more north out of the Gianelli trailhead (even did one "loop" from Gianelli to Crabtree and *wildly* underestimated how much it would suck walking the fireroads from Crabtree back up to Gianelli). So, while I've hiked the trail from Crabtree to Deer a few times as part of other trips, I've never made it out to Buck or down to Big.
The first day's hike, Crabtree to Buck seems straightforward (but I'm always open to input!) so I'm particularly interested in any feedback on the best route from Buck to Big on day two. As planned, retrace the trail from Buck, dropping down to Wood and then following the trail that runs along Buck Meadow Creek then dropping down toward Pingree and Big. Headed back to Crabtree on day three, the plan is to head up on the trail to Rosasco and follow the lower Bell Meadow trail back to the Crabtree trailhead.
Interested in what anyone who's spent more time out there than me (which is anyone as this is my first time to Buck & Big) has to say (and THANKS in advance)!
Also, as planned, day two (Buck to Big) should be an easy low-mile day so if anyone has a favorite "gotta see" spot near Big, I'm all ears there too (else, I plan to just explore around Big).
Thanks again - love this place (though I mostly just lurk)!