Do I have enough ground connections

[boatman]

So I’ve moved my battery to the trunk and I’m using 1/0 cable, for grounding I have 1/0 cable form the battery to a bulkhead stud that goes threw the firewall, on the engine side I have 1/0 form the bulkhead to the cylinder head and another 1/0 going from that same bulkhead to the frame and a 4 gauge wire from the frame to the core support and inside the car I have a 4 gauge cable from the bulkhead to the dash by the steering column support , also in the rear of the car I have 1/0 form the battery to the body (bumper bracket in trunk), is there anything else or different I need to do.
Thanks