Yes you can hook things up incorrectly.
I take a slightly different approach. Only two connector sets required. See photo..
If you are wondering, the ESC connectors were colored black to aid in not connecting two batts together. This can be done with PRC 6's. Preferably I would use the blue PRC 6's on the ESC with the rule only plug red into blue. Or in this case red into black. Hope that makes sense.
Cheers
Alan