I had the entire T206 set, minus Wagner, Plank, Magie and Doyle. I sold about 400-450 of them in order to get this Plank and a Magie, which I later parted with. I have never regretted this decision. The sell off was much more fun and much less painful than I thought it would be.
I have sold cards in the past that I miss, but none from that sell off. One of the tricks is holding onto a handful of cards that you really love. Put them aside and hold on to them through the sell off.