Watch the Fat Groove online guitar lesson by Robert Renman from Blues Booster
I think it sounds cool to highlight the A major triad for the A7 chord, so I do that more than once, actually. I also use both 8th note triplets and 16th note triplets. I find that triplets are often a great way to get a form of mental break in a solo. You can use almost any notes while you keep those triplets going, as long as you end on a good note. Notice also how I milk the triplets with repetition, and how the triplets in bar 15 and 16 follow the chords so well. Those double-stops are part of the G and A triads, that's why they fit in so well.