Question about bushing kit

[Cool_V_300C]

I'm not interested in lowering the car, but I'd like a solution to remove
the remainder of the bump steer and rear axle skip I feel.

background:

Tolerated this problem for a while and at about 18K finally had enough
and replaced the stock Conti's. Got a huge improvement by switching
to Goodyear and keeping the tire pressure at 30psi.

NOW:

I'm reading the information about the bushings and I see kits available
from Pedders for these specific problems.

What is the minimum set of bushes recommended for this?

Could I go with just replacement bushings and leave the stock OEM springs and struts,etc?

Finally, why isn't there a Pedder's dealer in Illinois?

Thanks in advance.