Introducing... the Devil's Advocate:
man. i'm sorry to say that i don't like this idea at all.
you are giving up the maximum security that growing in your own home provides. laws are not designed to protect someone renting an office/warehouse space. of course, change the locks. but if anyone even catches a whif, the police can ask the OWNER if it's alright to search the premises. you have no say. they will cut your locks without a pause.
and for what? to get up to (3) 1000w HPS units? i used that and more in a tiny 1 bedroom mobile home. this amount of electrical use does not gather unwanted attention. and you are paying rent on top of this... when you could just grow where you already live. you are kicking out some 5000 dollars a year just in rent.
now, if you were wanting to 'Go Big', Hit It and Quit It, and set up a 10+ HPS system, then a factory grow might be warranted. But you are only increasing your costs and your risks... for what can be accomplished in the privacy and security of your own home.