My suggestion of the DB8 omitted consideration of low-VHF. If you actually want WOCK-CD then go with one of the large all-channel antennas. I'd suggest you look into what they offer before making a decision as their offerings are rather eclectic.
http://en.wikipedia.org/wiki/WOCK-CD
At only <1 kW transmit power and at 45+ miles distance, reliable reception of WOCK will be marginal anyway in spite of the predicted NM in your analysis. Besides, WOCK has figured out that low-VHF isn't where they want to be and they have applied (probably in vain) to move to UHF 41, a move that likely will never be approved.