With out knowing how much room you have it's hard. Know this, If you go cheap you grow cheap.The big rule is , More light more buds. How much do you want every month or two ? Takes two months to flowwer but you can stagger and harvest each month. How much do you have to spend ? The unit can be made easy, DWC bubbler, DRIP, NFT, EBB and FLOW. The real money goes to lights, meters, nutrients, ventilation and oder control. Maybe A/C and dehumidifier also. I'm old but still have to do my home work to keep up with things and ways that are good. Good luck hydro is the bomb. Keep asking questions.