Adding a Yate Loon to Hyper 212, push or pull?

So i have a Yate Loon D12SM-12, 1650rpm, 70cfm fan, and my question is, should i put it in the push or pull position along with my stock fan? With push, it would push more air through the heatsink, but with the slower coolermaster fan on the otherside, wouldn't it kind of mess up the airflow since its slower? I could put it on the pull side, which i think would be better, because it would be pulling all the air the coolermaster fan can push.

And before i get all the same replies, i know, i should use two of the same fans, but still.

What is the cfm of the stock fan? I would think you would be better off with the single Yate Loon fan. Get a 2nd of the same when you can for push/pull.

hyper 212+ fan

RPM: 600 - 2000 RPM
Air Flow: 21.2 - 76.8 CFM


Yate Loon

Speed: 1650 +/- 10% RPM
Airflow: 70.5 CFM


they seem to be pretty close actually

why not just try it out both ways and note the temps for each?