You can run an 8 plate with a modded OEM inner hub and pressure plate.
I'm not sure what motor you're building, but an OEM 2nd gear will take a ton of abuse from an 18DM.
I don't really care why you run what you run, but there is almost no reason for any of it. If it makes you feel better, great.
But you can't expect all these BansheeHQ members to get on board with nearly anything you run.