dogface, nothing beats experience and you are gaining just that. When the "OLD PROS" are gone then it will be you sharing info you have gained along the way. Keep it simple.
..just speaking of radiators "reminds" me of hours of digging and looking. The more you know and are informed the better decision you can make. Check out the U.S. Radiator sight and a few others for some good reading. If you do a search here you'll find hours of reading. Its not been that long ago that there were "links" coming out of the woodwork for the best deals on what works, who's fits best ect ect.....
As we say on the Stovebolt....Knowledge is the best Resource and of coarse advice from the "tribal elders" as Peggy like to say!
Keep us posted and let us know how things turn out.