Zillow and other online estimates are usually not accurate.

Do not try to do everything yourself.Always do the math analysis and try to look at the subject property before you make an offer or at least have a clause in the sales contract that allows you the time (usually about 15 days) to make a detailed inspection and possibly back out of the deal without a penalty that hurts   Right after you close on a deal get an insurance policy that will protect you in case of a loss.Just do what is average for the neighberhood.  

A lot of us throw away our extra leads, the ones that aren’t immediate.

Usually the hardest part for most new investors is "pulling the trigger".

Should we work on paying down our student loan debt as much as we can or continue making the monthly payments as we always have and use the extra to finance our first property?

Take the extra 700/month (1650 rent for Unit 1-950 basement rent=700) and pay off the 2nd.  

Usually, these are folks who are comfortable working with the demographic.

Not all of Muskegon is a bust, but the better areas don't often offer good deals, as they are usually $200K+ near or on water.

You must qualify for the price of the home plus the repairs (Repairs will be over $20,000 usually).  

@Jon S. agree now is not the time to be buying, I believe we are in extra innings of the current business cycle.