You can buy pads for the Baers anywhere they sell SVT Cobra brake pads (which is prolly damn near everywhere), since the calipers for our Baer kit are essentially just Cobra calipers (PBR). There are a lot of brake pad choices for these calipers all the way from economy to full out race style pads.
HTH
Oh and BTW, I would personally go with wilwoods if I could do it all over again...can't beat the fact that you would be substantially lowering unsprung weight. Vitally important? No, but every little bit counts!