Assuming techs are 10, I would build enough abs to last the waves, Drop the towers and with hero's of roughly that size, move out every attacking troop but the archers, keeping around 100k ish archers in the city similar to these http://ww.evonyurl.com http://ww.evonyurl.com/n6kx1w.
Not saying you should try things like this but its just something a noob like myself would do.