Well I hope it's not too late, but whatever you do, don't use common poultry netting, or chicken wire. I like the fencing or that has 2x3 inch holes much better. Poultry netting has 1x1.5 inch holes, and the buds don't always fit through them. It also has hundreds of little poking wires, ever ready to scratch you.

I know it's expensive, but Penetrator is the key. Some say it's more important than the Liquid Light. I use them at half strength, which seems to be more than plenty, and of course that cuts down on cost.

I've used it as late as week 5 of flowering. Just depends on humidity and stuff. Don't let buds grow around moisture.