from a laptop or mobile phone on one of my SFR's (internet must be hooked up, but most tenants do it anyway and like to be able to monitor the outside of the house remotely, even if there's nothing going on.)

If the house was built in the 50's or earlier than you probably have cast iron pipes.

That could make for some great opportunity on the appreciation front if you believe they will bounce back.Columbus is talked about adnauseam on the forums.

I'm a recent graduate and I was wondering how can I get access to a DSCR loan without having a credit score, not being an us citizen, now owning a house (some DSCR loans require that you own at least one other house) and not having a job.

Quote from @Erica King: Hey hey so I’m a single mom that started house hacking a little over a year ago .

Start small with strategies like house hacking, leveraging your hands-on skills for value-add properties, and building a strong team or network to reduce risks.

So the line is a shared private line between the 8 houses. 

And, we'll probably want to buy another house before then. 

Begin by educating yourself through books like The House Hacking Strategy and podcasts like BiggerPockets, and join online communities for support.

These communities also feature amenities which make them appealing to Disney families, such as club houses with pools,restaurants, lazy rivers etc.The area is indeed saturated, but keep in mind it is also the most visited vacation destination in the U.S.