You're to the point where yellowing of the larger fan leaves is pretty normal, but I'd recommend not picking any more of them off the plant. These are the plants last stores of energy, and I generally just leave them on until they wither up and fall off on their own. Definitely don't add a higher Nitrogen fertilizer, as this will encourage more foliage and less bud production. Stick with the bloom fertilizer.

As for the rest, the plants look a little heat stressed to me... but that may be symptoms of other things, as well, so take Daihashi's advice and fill out the troubleshooting form to the best of your ability.