I would go with the ladybugs if you can, particularly at this point in your grow... but you can also pick up some Dr. Zymes Eliminator or some Spinosad, both of which are organic and can be sprayed right up to the day of harvest. The problem with that is you need to spray both the tops and the bottoms of all leaves as well as the stem and all branches (just before lights out) and it gets really difficult with as much of a planting as you have... but it can still be done.
Your choice - but do something NOW.... Good luck!