I was new to the SFR investment world, and it was important to me to work with company with good reputation that can act quickly.

Get that bench strength first and then you'll be ready to move forward quickly and seamlessly.Best...

I switched from Quick Books to Baselane and I am SO glad I did.

Study what has sold at a solid price and quickly.

As other people mentioned the areas do change pretty quickly. 

Further, running a very quick and simple valuation based on $900 rents, 8% vacancy, 25% op exp margin, and a 9% cap rate, I'm coming up with an ARV of around $83k, so I'd pass if I were you unless you can get a much lower purchase price.

I would then work to renovate the bad unit as quickly as possible.  

Don't be so quick to indebt your paid off townhome until your learn creative financing and review all your options.

They are designed to acquire, rehab, then get out of the loan quickly. 

A few years ago there were a lot of get rich quick types, and I still get contacted by people who think they can buy 2 houses and retire on the cashflow.