Sounds like a great project to work on. Here are a few suggestions. As a general guideline, since you are looking for solos over progressions as opposed to modal stuff, you should really look at Jerry Band as most of the songs there have Jerry taking extended solos over the verses.
Loser - from the legendary Barton Hall 5-8-77 show set I. Great example of Jerry playing over the progression, classic Jerry bends and some nasty pinch harmonics as well. HE is absolutely wailing. Also, even though it is just a monstrous E Jam is Jerry's solo in Not Fade from teh same show. I had always thought it was the best solo he ever took, you can actually hear him click on the drive pedal and just explode. Then I saw JGB in Buffalo in '93 and he solo he took in Cats became my new #1.
Anything from that first double disc JGB. Senor, Evangeline, are all great and the best example of really hitting the chord tones is the solo is Simple Twist of Fate. As always wth JGB, Jerry on top of his game both vocally and playing.
And from the first Jerry Garcia and David Grisman cd...Thrill is Gone, Grateful Dawg. And then from Jerry and Grisman "So What" cd, check out the version of Grisman's tune 16/16. Jerry is all over that.