One wire alternator conversion- best method to run the thick power wire

Had my one wire 170amp alternator installed today at a local hotrod shop. I wanted to give them a small job before sending them any big tasks.

They ran the power wire from alternator down the valve cover behind rear of motor then up the firewall.

I was thinking a shorter wire could had been ran down and across the front cross member then back up to the battery. Less visible and not in the way of the valve cover bolts.

what’s your option of running power wire?