Rookie electrical question

I was going to run the battery cable to a pole under the dash, that goes through the firewall also...Power starter from engine bay side and alternator wire to this pole in the engine bay also ( Im looking at "hiding the wiring")...The bulkhead fitting will be under the dash and all the wiring for the lights will be run through conduit in the wheel arch and out to the front... I anticipate powering the dash, switches, relays etc from the pole under the dash...hope that makes sense...is there anything in there that sounds like it could cause major issue?