I don't know about where you are but here hydro tells the police about high users that might have a grow op. Oh, I guess you would have one Anyway, I would suggest you find out about any laws in your area for or against what you want to do. Probably keep great records and have an open house policy.
Note two. Once the police find a grow op. they confiscate the house and sell it off. The report of those who have bought such a house is that it is rotten from the excess moisture. So be careful how you set up. Drug growers don't care what happens to the house as they expect to loose it... after earning many times it's value. So that may be just their desire to maximise use of floor area and the desire not to be there when the raid happens.
Anyway, just the two precautions I thought of.
I don't much care for your implications sir.. As a matter of fact, I have a small indoor chili/ tomato hydroponic setup in my house. As to how my grow setup could go to the police and tell them tales of "high users" is beyond me.
Can't really understand why you would start talking "precautions", after I explicitly said that I'm not endorsing pot growing.