I like Wu Kong but worry about the slot he takes up in your team. In all honesty, I would seriously consider leveling Cyprian and putting her in Wu Kong’s spot, esp if you have another decent purple troop. The reason is that the double damage you will do against yellow will offset the damage buff/accuracy debuff of Wu Kong and the reflects won’t do anything to you. I’m running Quintus and Boomer, both of whom suck by anyone’s measure, but doing just fine because of the above.
If you can’t get Cyprian to at least 3rd tier in the next couple of days, then consider using anither red and pump him or her up during the weekend if you can.
Believe me, the difference in the nearly useless yellow and doubling up purple or red will be considerable and well worth your effort. Speaking from experience with Chao, who still lowers mana even on yellow opponents but at terrific cost.