Don't Mind the attention ***** fat man. he has no other tricks up his sleeves. played out.
On the other hand with one run of 1/0 ga wire to that back bank of batt's in theory will be ok. but you will loose out on the charging end of things. you will have allot of reserve amperage. but not enough voltage. there will be a big voltage drop once that wire heats up. and it will.
but other then that i think you will be fine. great job on the build so far. i like the craftsmanship of the build.
now more build!