Yes, I agree: Young Witch is neutralized on this board and opening it after seeing your opponent showed 5/2 was a gross error. The pile to pound on this board is primarily Duchy.
Grand Markets are nice and all, and there may be a chance that a Library/Inn combo might be set up in time to get Upgrades, Golds and Grand Markets and a nice solid run on the Province pile, but it won't matter much if the other guy is using all of his >=$5 buys gaining enough Duchies and Dukes to beat Provinces.
This isn't a great Duke board, but it isn't a great Big Money, attack or engine board, either.