Which work out, I pay 2K$, and rent 1800$ for the bottom unit.

If you're going the umbrella insurance route, make sure it will cover you for several things including just the routine slip and fall (like mold or earthquake).

We routinely set our deposit amount above the rent amount intentionally, to encourage the resident to keep the place in good condition & to remind them that is separate from the rent. 

@Marcello Di Gerlando @Mike De LotaWe are definitely going to work out a contract with an attorney and have talked about this point.

If you do, how did it work out for you?

They look good on paper, but I don't think it will work out as well as traditional houses in the end for you.  

Its worth having a conversation with the PM and workout the best way to move forward. 

I have not spoken to a loan officer yet as I'm just practicing the routine of analyzing deals, so I'm not sure if this is very realistic, but rates are very low at the moment.

Just make sure you keep up with any routine maintenance to avoid major issues in the future. 

If you want the federal government to back your loans (e.g. a traditional mortgage) you will need 25% down for a multi-family.Doesn't mean you can't work out a deal for seller financing or work with hard money lenders, of course.