For some reason, I didn't get the email, but I just answered your PM. First of all, no problem using the LVC boards with your brushed Currie setup. It still uses a hall-based throttle. Here's how you would connect the LVC opto output:
This shows a 24s setup, with four LVC/parallel adapter boards, and you would just need two, but the idea is the same.
For the pack connections, this is how to connect a typical 12s2p setup:
The main leads are paralleled at the total pack level, but the balancer plugs allow the cells to also be connected in parallel at the cell level. When two, or more, cells are connected in parallel, they will equalize to the exact same voltage, and from that point forward, can be considered as one bigger cell. Not shown are the balancer output connections. These can be the same sort of 7-pin JST-XH pigtails
like those that come on the packs, but I like to use better connectors and heavier, 18-gauge wire. Usually, I use Molex MicroFit 3.0mm plugs and connectors.
I use matching connectors/pigtails on the balancers we are doing:
For your setup, using the 6s charger you already have, you could simply use the 7-pin JST-XH pigtails, one on each LVC board. You could leave the setup connected in series, and simply charge each 6s section separately, but I would add an extra set of charge wires. The last thing you want ot be doing is plugging and unplugging the individual packs, just for charging. You do it once, and you will be looking at MeanWell pricing, just like the rest of us.