Battery relocation- is it possible to just use "remote battery posts" in the engine bay?

I retained all the factory cables and wiring under The hood. I mounted a bulk head for the Pos. cable as seen and ran the positive cables and wires to that. Negative battery grounded to the factory tab on the rear wheel well. The motor has its own ground to the body plus it is on steel mounts. The normally open relay you see is the one wire alternator shut off. Easy peasy!