You are like me then. I give mine away too for about 20 medical people here.

C.A.P. XGC-1 Xtreme Greenhouse Controller is one of the first things to start with. It would improve your current grow too. You can find it on eBay for about 700-800 the store price is 900. I use 2 of them one for the veg and one for the flower room. CO² is another thing you can get to increase your current grow. The tank type is the way to go for small to medium grows.