As far as the best radio(s), a Galaxy DX99V, or Galaxy DX95T, both with dual finals, will have the best range barefoot. . The 99 is my radio of choice, but I have 2 Connex 3300's, and a peaked out, chromed out Cobra 29 Classic **Chicken Haulers Special** with the old school side mic and all the trashy noise toys... the h*ll with these new front mic radios! You can keep them!!!
DO NOT CO PHASE YOUR ANTENNAS! Just use one, be it a Wilson 2000, or 8' whip. . You can channel all your power through one antenna, and if your antennas are not set up just right, they will basically cancel each other out. . You will also need a minimum of 18 feet of coax, but do not roll up the extra in a bundle, as this will affect your signal as well...
As Far as mic's go, a noise cancelling mic is the best way to go. . Power mic's are nice, but really not practical. . I like my Road King RK56 mic, because I can have the windows down, and you cannot hear any background noise, and it is very crisp and clear. Nothing is more annoying than someone who has a stock radio, and has too much background noise. .
If you have any more questions, feel free to PM me.
-Chris-