buy a bunch of antimerns s5, i doubt you have enough space for a mass of s3, better to have more density with s5
17 s5 will do it, remember that your residence need to deliver 10kw
I would agree that is a lot of S3 or even S3+'s. On S5 op keep in mind it normally runs hot and loud. So if your spots are with people living close.... might take a mod or different miner.
I might suggest starting smaller. If your getting 17T of old gear in one shot that is a lot, just at once if you have never mined before. I would say start slower and move up you will most likely be much happier with scaling like this instead of a ton of old miners at once.