The bigelows' main peaks (West and Avery) would be pretty directly behind the Crockers, not sure you could see them clearly.
Here's how they look from South Crocker: http://www.summitpost.org/bigelow-range/690902/c-154452
Double peak at center is West & Avery; Bigelow Horns are at left (I at full size I can separate the two horns). There's something in the distance to the right of Avery (above/left of Little Bigelow), which actually is right about where I'd look for Katahdin. For all I know it's Baker Mountain or White Cap, though. I haven't visited most of the peaks mentioned, and my last visit to the region was a while ago.