Looks like I should be able to run a 1000w and and 700w psu off one 20a circuit, I'd only be pulling 14.9a. Do you think this would be safe for 24/7 operation?

Will I have to do anything internally with the psu's? Or do I just plug them in as described?

For whatever reason it won't let me upload a picture. But mine looks exactly like this, it's a 10 plug.

https://www.eastshore.xyz/wp-content/uploads/2019/04/Antminer-Z11-Zcash-ASIC-Miner-135k-for-Zcash-Mining-IMG-03.jpg

But I see exactly where you are going with rewiring the two apw7's and how this could absolutely destroy the miner is done incorrectly.

I have a large RV and live on a farm that has a very large off grid solar array, I have access to two 50a 120v circuits. We don't have anything setup for 220v and with the cost of upgrading the equipment it just isn't worth it. I don't mind splitting up the psu's if needed,  just trying to make this all work because of the almost unlimited nearly free electricity.

They will be 100% dedicated circuits, I can go with either 15 or 20a. I don't necessarily have to use just one psu per machine but I have 0 experience using two psu's on the same machine.

I'm looking to setup a few Z11 machines on 120v power. Does anyone have first hand knowledge on doing this? I don't have access to 220v power and I've got ridiculously inexpensive power where I'm at. Any advice would be greatly appreciated.