http://www.bilsteinus.com/uploads/tx_templavoila/Bil_OffRd_Cat2011.pdfPage 10 of the .pdf shows a 0-2" front lift and a 0" rear lift application for the 5100's. Use 24-186018 on the front, 24-186025on the rear.
I run the Edge Insight CTS and love it. It has plenty of options for sensors you want to monitor. Additionally if you get the expandable EGT probe harness you can add on things like pressure sensors and temp sensors if you don't want to rely on the OBD-II port.
I got some 5100's for my 2006 lifted at 6". Good ride for a lifetime warranty shock. Pretty simple swap with hand tools. Be ready to collapse a shock, kind of a tough to fit in the mounts when extended.
I have owned both a V10 and PSD. My '99 V10 was VERY nice for power and capability even before I started modding it. For the cost of the PSD over the life of a 5 year car loan the V10 would use the same in gas. The PSD has more power but at a higher initial cost and increased maintenance...