Same! I remember when the Zenith Daytona was announced and wanted one back then but decided to go a little more conservative and only now had the chance to come back around.
It's a modern enough Rolex you probably won't get a bad watch from any respectable dealer, CPO or not, but I think you'll feel better about the purchase when you know exactly what you bought in relation to the other 16520s out there.
Some thoughts. The bezel is hard to refinish and is nla along with the tritium dials. Check the sharpness of the numbers and the profile around the edge of the bezel and make sure the dial is what you want. Frankly, I'd be fine with a service dial and hands as long as the price matched the loss of originality. The case is quite sculpted too and I've seen some bad polish jobs on the cases - warping in the reflections on the case sides, uneven width and profile of lugs or crown guards, and uneven brushing on the tops of the lugs. Can always service the movement but hard to get metal back once lost.
17,804 Rolex listings are live on the eBay market and 1878 collector listings on the WatchProSite marketplace.