I would add some Dutch Master Reverse for the times you find a hermie as well as some Bush Master from Humbolt County it's the same thing as superbud but cheaper. It will stop plants from growing taller and outgrowing your area. It's a must for anyone doing SOG type of grows.

You sure have plenty of light I only use a single 1000w HPS on a track mover to cover the same number of plants. You should be fine but you should also have some other products for the times shit happends. Gnatrol is another product you should have around just in case.

Just make sure you are not using nutrients that cancel each other out. Like H²O² and can kill bacteria if you are using enzime type of products. It's important that all your nutrients play well together.

If you can get some of their sensi pro you may want to try that. It's a package for each week of growing and very easy to use. Problem is it's expensive as well but it's said to be the best product they produce.