Hi
I know some things what can be done, and a sulphur burner should only be run 30mins til the lights go out when in bud.. it's only going to help prevent the situation!!!!
60plants is not alot, so u MUST take a siccissors and cut the leaf's that are infeccted and eaither CHOOSE to harvest a little early or go a little longer (if you have undercontroll) to make up for the lose! I you s'arinor and it seems to work well. remeber that any foiler spray is only going to help create a surface area that is not liked by the mold to prosper on!!! for what I know foiler spray DOES not cure the plant of it's sickness!!
So trim trim trim, but not to much, and try not to trim more then 20%, then simply run your burner 30mins, otherwise your just wasting. Maybe apply a charcol filter for air intake but thats more money!! Your half way, so simply just spray your protector and top the bad shit off, keep a close eye on bud mold, but I dont think you will have a problem! One thing is you can let your plants dry out more often between watering this will help with the humidity. Ever notice the humidiy increase by 10-20percent after watering!!