The rear bleed point is where you want to fill from, once the radiator is full. Just leave the radiator cap on and crack the bleeder, I use a large syringe to fill it.
As I said, make sure the car is cold (overnight) before checking and filling. You will have to do it a few times as the bubbles get trapped in the block, and are only released from driving around. It's a pita, but once bled you should be fine if the system is still sealed.