Sam, do like I did, Place a deep shelf at the bottom, for extras, or if you want to place a NAS or other server at that point, then a shallower shelf up towards the patch panel, for the modem & switch if you do not use a rack mounted switch. I have the patch panel at the top for the modem & switch to sit on. I also used two different colors of patch cords, to designate their use. White for U-Verse equipment, that plugs directly into the RG, and Red for all other networking equipment (BD, PS3, computers, etc), that plugs into the switch.
I penciled in on the label what goes where, so I do not have to use a cheat sheet, to figure that port 12 goes to such and such room. Of course, I only have about 7 ethernet jacks live right now, three are not doing anything, so no patch cords plugged into those jacks.