I would look into acoustics. You may not want to play acoustic, but it's still a good practice tool. Sometimes I like to run through my scales on my acoustic and do some of my exercises with it because it strengthens your hands. The string tension and gauge of acoustic strings are greater than that of an electric. This makes your fingers work harder to do what you normally do on the electric. Also, with your chord progression help... pick out a couple chords and just practice and practice switching between them. Rotate in another chord everynow and again and you'll be flying through chords.