engine still not cool enough

Well I finally got to really drive the car a couple days ago. Drove about a 15 mile round trip with a 1 hour stop in between. The car didn't do too bad on the way there, ran about *195, still more than I want but on the way back I ran it a little harder, nothing excessive, and about a mile from the house the temp hand starts to climb. It went to *210 before I could pull in the driveway good. This thing is driving me crazy. I wonder if my 2 row radiator could be made into a 4 row. I think the cooling capacity is what is hurting me.