Do the fronts first and then the rears. On the fronts, to get 4 to 5 degrees of negative caster, you will probably have to get the left and right upper "A" arms modified for additional upper ball joint movement and additional shims added to make up for the increased width. While at it, have the "A" arms modified for ball joint "locks" to hold proper camber adjustment. Without doing this, you will lucky to achieve 2 degrees on negative caster. Car will feel more stable with more caster, but steering effort will be increased, especially when parking into a space.
I've owned my car since new in 1974, and I feel this is one of most important mods you can make, especially if you run 17" tires in the front.