I think the consensus is that push or pull fan configuration on a radiator doesn't make much of a difference. I would probably do a push setup just because I think it would look better inside a case, so fans first then radiator.
Under ideal conditions, the fans should blow thru the radiators and then right thru the case vent/grill and out thru the top of the case. It is better push the air thru the radiator than pulling that air thru the radiator.
I think the consensus is that push or pull fan configuration on a radiator doesn't make much of a difference. I would probably do a push setup just because I think it would look better inside a case, so fans first then radiator.