To radiator or to blocks?

Wondering which way I should set up my tubing. I'm thinking about makeing it go to the rad, then to CPU, then GPU, then Northy. Not quite sure though. Im also thinking about getting 2 heatercores. I was thinking of going to the rad first, then to CPU, then to another rad, then to GPU and northy. Tell me which you think is best.

makes no difference. Plumb it how its easiest.

doesnt matter the order. I wouldnt suggest going to the northy.. wont see much benefit from what ive read. also if you have 2 rads you need a good pump w/ good head