I'm also in the process of mounting a fuse panel (in my case, a Blue Sea that I already had, but with a harness from Eastern Beaver).
I was going to mount mine up front as well, as everything I have will be up front, so I figure why run all the wires back to the seat tray instead of running one to the front? But after looking at it all weekend, I think I'm going to put it under the seat like many have suggested, as there really isn't a clean and dry place to mount it while still getting to the fuses in an emergency.
So, now I need to run 3-4 sets of wires back to the seat tray, and this is how I figure I'll do that.
These guys have 8" and 48" male and female SAE plugs and wires. I'll run 4 48" males from the fuse block to the front (including a spare), and on all my accessories I'll tap the 8" female onto the existing wire. The 4-foot cables are only $3, and the 8" ones are $2. It's 16AWG wire, which is heavier than any of my accessories.
2-Contact Flat Molded Connector | 742
Then, I can switch around the plugs in the future if I need to (I'll number each of the 48" cables so that I know how each one is fused), I can run one of the SAE's into my tankbag if I want, and I can get a bunch of SAE to Powerlet or Cigarette adapters as well.