The 212+ will be fine for the 3220.
Now, if you wanted to upgrade to an i5 K or i7 K at some point, I would recommend the 212 Evo, but otherwise, the 212+ is sufficient. Hell, even the Hyper TX3 would be fine if you never want to upgrade or overclock.
Upgrading to an i7 once prices drop towards the end of the life cycle is likely or a year or so if they fall fast. I'll get the Evo then.