Firewall Ground block-Battery interferance

I am ready to order my firewall ground block from B & C and I am wondering about its location on the firewall. I have installed the Odessey battery box but I do not have a battery yet. How high above the battery box does the ground block need to be located in order not to interfere with the battery removal ? I have seen it located here on many photos. I want to order the braided bonding strap and need to specify the length.

Looking forward to your help !

Thanks

Jeff Vaughan
RV 7A
West Chester Pa

I put mine just above the bend line of the firewall and directly above the battery box.