hada brain fart and need sub wire help

For my next set up i plan to run a Mrd-m1001 to 3 Type-R 12's .

Im looking at getting 2 dual 4ohm ,  and 1 dual 2 ohm.  i will series each sub,  the dual 4's to 8 ohms each, and the dual 2 to 4 ohms.   Then paralell them to the amp to get a 2 ohm load right??

So thats 8 + 8 +4 then paralell to the amp to get 2 ohm.?

Its been a while since i had to do any hard thinking haha     

Will doing that give a different voltage to the dual 2 ohm sub vs. the dual 4 ohm ones??