Any advice on strategy for multifamily properties would be helpful in terms of narrowing them down, and areas in Michigan to look in.

Have you narrowed in on any properties yet? 

It's true you get a tax deduction for your mortgage, but you also pay taxes on whatever else you decide to do with that money.I would list all of your known investment opportunities, what you think the after tax returns would be, and a risk level 1-5.If paying the mortgage is a clear standout on that list on a risk/reward basis, I would spread out the $60k over a period of time and apply it to principal.You might have other goals like cashflow or reducing risk which might weight towards paydown also.

By utilizing OPM, you can widen your portfolio, spreading risk across multiple properties rather than being tied to just one.

It involves overlaying numerous spreads.

I found the spreads on the fix and flip projects were only 50k - 70k because the initial purchase was high. 

We are spreading the net wide, as well as going deep into the markets that we have presence. 

Whether it's the interest rate spread, extensions, terms, or amount of stock needed, we can work something out that fits their needs.I've learned that the balancing test is important.

It has long been a favorite for local investors and in the 6-8 years the word spread and it is a hotbed for many more now.

Diversification of your portfolio, both geographically and by property type, can spread risk and mitigate the impact of localized economic conditions.