I'm in a similar situation and am looking to go with a PIG0311 Tripod and a Feisol CB50D Ballhead, both will probably be purchased from HOG Saddle. However, I'm looking to go direct mount with a QD Lever. Currently, I shoot a LWRC REPR with the removable picatinny rail sections along the bottom end of the fore end. Browsing through all of these threads, I'm reading ARCA this and ARCA that- and it all really sounds Greek to me. I'm trying to stick with picatinny, what do I need to make this set up work?