That sounds like a good setup. There are only so many solutions being produced right now from most companies...
The most popular panhard bar we sell is the Steeda unit...
http://www.stangsuspension.com/store...?idproduct=605
The Steeda panhard bar is adjustable, but still gives some compliance with the urethane bushings... unlike some adjutable arms which have stiff spherical rod ends...
As far as lower control arms... we sell alot of the Urethane solid arm setups...
http://www.stangsuspension.com/store...?idproduct=977 and
http://www.stangsuspension.com/store...?idproduct=639 are our most popular part #'s.
I think the Urethane solid arms are the most popular due to noise reduction, and construction.
On the upper arms, I would get some adjustables so you can adjust pinion angle after lowering. Pinion angle is NOT a set in stone adjustment. It totally depends on the amount of drop, power, use of the car, etc. In General... a slightly negative pinion angle is optimal...... more negative if you're running slicks, or have a huge amount of power... Less negative if your suspension components are stiffer, or your power is less....
Upper control arms are adjustable for a reason... to "adjust" pinion angle, not to "set" it... if there was a perfect pinion angle, there wouldnt be a need for adjustable arms....