I have just added a panhard bar and now my car feels bouchy, what do you think?

I have installed high rate springs and camber/ caster plates, a big ft sway bar, Illiminas in the front. In the rear I have the stock shocks (I want to get the right ones) and a Ground Control panhard buy I bought off a friend. It is not the best, but what I can afford at this time. I made my own mounting bracket, which moves the bar a bit forward to lesson the in-alignment. When the car is off the jacks and on the ground the panhard bar connection to the axle is ¾" higher than the side mounted to the body. I must have missed a measurement. Now that I have added the panhard bar the rear end feels a whole lot more "bouncy" than it did before.

I know I need new shocks, but why does it feel bouncy?

How will having the body side attachment point ¾" effect the handling? (Tighter or looser feeling).

I need new shocks on a budget, the Illiminas and Koni adjustables are both about the same price, which would you choose?

Thanks ~ JEB