Connecting two CPU fans to the MOBO

So, I succumbed to cyber Monday and bought a cooler master hyper 212 plus (http://www.newegg.com/Product/Product.aspx?Item=N82E168...) because, well, why not. I wanted to add a second fan to do the whole push pull thing because again, why not. I have a couple questions regarding this setup.

1. Is a push pull system really that much better?

2. When getting a second fan, does it need to match the specs of the fan included in the unit (600 - 2000 RPM, 21.2 - 76.8 CFM )

3. If they aren't matched which on goes where? More airflow for the pull or the push?

4. How do you connect two fans to the MOBO? (GIGABYTE GA-970A http://www.newegg.com/Product/Product.aspx?Item=N82E168...) One to the cpu fan (4pin) and the other to sys fan (4 pin)? Or get splitter and put them both on the cpu fan?

I fell like my cpu is running hot, as my values are 37c min and 60c max (Prime 95) with my haf 912 (my fan setup will probably be a whole other topic of discussion)

As always, thanks for your suggestions.

-X