The room sounds ambitious! Do you have any growing experience? That will be the biggest hurdle.
I would recommend starting off with a smaller run, maybe about 25% of the full size plan. This will give you a better idea of what can or can't be done as well as keeping costs down somewhat by making your grow more efficient. I use 5 gallon buckets and at the end of a run, 5 or 6 plants totally fill the 12 x 8 room to the point that you have to crawl under them to reach the water. How much head room do you have? There are a lot of variables. I would start off smaller as a trial run and scale it up as you get more comfortable. Just my 2 cents.
I don't think anyone here wants you to be unsuccessful.
I do have to agree with
@Jimster and
@Dan789 .....
This is a more advanced endeavor than most growers realize, BECAUSE, the work does not multiply each time you add an additional plant, BUT the work becomes exponentially more intricate as you add each additional plant.
You know all the CONS: Equipment Cost, Compounding issues from simple issues, TIME.
Most gardeners going into a room this size are doing it because they are popping like a MuffinTop over leggings. They have been designing their EXPANSION for some time. That expansion is based on intimate knowledge of your genetics, your gardening abilities, and your evaluation of previous experience.
Besides, its easier to handle a pest or fungus break out in a smaller grow...... like Perpetual Grows, which allow you the same yields over the same amount of time.
