A lot of people worry about additional caster. Offset bushings in the uppers gets you a decent amount. Think about it. If you have +2 stationary with chassis rake of of -2. As you go down the track and the car goes level you now have +4. Another important thing to take in to consideration. Adding caster lowers the outer tie rod. Moving the outer tie rod affects bump steer. The 67 Satellite I installed the adjusteable aluminum rods on had toe change after they were installed. From the wheels off the ground to ride height was a 1/2" change. The outer tie rods were to low. Had to shorten the strut rods up to get it down to 1/8" toe change. Thus reducing caster.
Doug