Sunmaster 600 hps Cool Hood,it all depends how much else he wants to spend ,he will need a min of a 8 inch Vortex fan from a filter to keep heat down in summer and winter .He only has to produce nice quality bud .But a nice amount so he can sell a bit to up grade everything he needs ,also cover running cost.4 inch In let ,12 inch ossalting fan.If he's only wanting to produce small amounts ,because he is not a heavy smoker ,LED.You can hit 4/5 Oz every grow with a Mars Hydro 300,that's one plant grown in a Auto pot in a tent ,total cost of everything in the tent grow I did is in my journal come in around 120 pound,inc the Pineapple Express seed.