Gave them a solid flush 5 days ago... two weeks to go...advice?

I had a PH problem, so I gave them a solid solid flush about a week ago. I am going to feed them for the first time since the flush tomorrow. I gave them about 5 gallons each in 3 gallon pots, and I am growing in SunShine. I got a shit load of run off from the flush, and I think I got alot of the garbage out. They are scheduled to be finished around the 7th, so I am trying to formulate a plan here.

My question is...I want to be able to feed them for hopefully ten days from now, that would be three feedings... and then flush for a few waterings...would this be enough? When I say I will flush at the end I mean just give them PH'ed water with a bit of run off, not a ton. I have read they don't need to be flushed nearly as much in a soil less mix like the one I'm using.