dabluesman,
Yeah, with what you've already got you pretty much have all the scalar stuff covered for this style of music. Cop some licks, get yourself a good vibrato if you haven't already and learn which notes sound good bent and slurred, hammered or pulled rather than picked, etc. And listen, listen, listen! Besides the guys you mention check out the real sources -- particularly Albert King, BB King, Buddy Guy, T-Bone Walker... and other extenders/adapters like Hendrix, Clapton, Mike Bloomfield, Peter Green, Mick Taylor... Play around for hours day after day and lo and behold, one day, you'll be there.
-AlChuck