For example if you wanted to purchase multi families for cashflow: You could quickly check sales of duplexes/fourplexes etc. in the last 6 months to get a feel for ARV's.

They benefit from a higher rent and you can build a portfolio quickly.

I've completed renovations and am thinking I can do a cash-out refi, take out the private lender and access some equity for another investment.

it seems as if option #1 allows you to quickly scale with less money (basically furniture and a security deposit) but has the downside of lower margins since you're not building equity.I've also thought of other ideas such as buying a few properties under a llc with several other investors, where the total cash per person would be the same as if you bought 1 property by yourself but it's diversified across different markets and reduced risk.

I was considering just door knocking and asking local folks if they would use the laundromat or if they already had access in their buildings.

Your DD period will allow you to verify some of that information, like cross checking the leases that you will now have access to with the rent roll provided to you prior to LOI submission.

The MLS has a lot of deals on it and you have access to some good people.

On quick review, the house looks good, nice and finished.The only thing I noticed is that there is plenty of horse parking, but no car parking.  

My point is, if we do decide to purchase a residential property over commercial, we'll likely go FHA and then pay down the 22% quickly to shed the PMI. 

I also work in different parts of town, so we're interested in something very central, hopefully in a decent (or very soon to be decent) neighborhood with good/quick access to different parts of the city.