stepped-down power for APs

stepped-down power for APs

I have some cisco 1570 access points that I want installed outside, I have a couple of AIR-PWR-ST-LT-R3P to  tap the light from the pole (not enough though). The 4 ft. cable is quite short for the position I want the unit at, could you recommend a unit that would offer same service capabilities with a longer cable, 8 ft. or more. I know I could do a do a weather resistant joint to increase my cable length, but my preference is continuous cable run.