Antec 902 V3 + Hyper 212 Plus will it fit?

It will not (without some modding).

According to a review of the case on Newegg (4th review on Page 4), the user was unable to fit a CM Hyper 212 EVO unless he cut off a piece of the side fan.

http://www.newegg.com/Product/Product.aspx?Item=11-129-...

You really don't need it with that case. You may get a 1-2C temp drop on your GPU by adding a side-mounted fan, but having (2) intake fans up front combined with rear and top mounted exhaust fans will provide all sufficient airflow for your PC. A side-mounted fan would be highly recommended in a situation where you only had 1 intake and 1 exhaust. For a detailed study on fan placement and impact on cooling you should read this article: http://www.bit-tech.net/hardware/2012/02/10/the-big-coo...

Have that case with a 160mm tall cooler = side fan won't fit.
I used the hdd mount bracket for a 120mm = directly infront of gpu.