Congrats.
I think C/FB is probably the moveset you can beat easy. FB is by far the easiest one to dodge, I think you can dodge it perfect if no lagg. Can each of your gengars get of 1 extra SB each i think you have good chance of doing it.
Out of curiosity. No houndoom? Your team looks alot like mine (DPS-gengar fanboy). 3x3300-3400 tyranitars. 2 gengars and 1 scizor. But I haven't got a good houndoom