If SFR 1-4 units are based on comps and multis are based on the income they produce, when the market corrects, do the multifamily properties take a hit in value like SFRs?

You're going to have trouble with either strategy because the 1-4 market is still hot right now and should be for the foreseeable future.

To my understanding, after I have tax reports on the properties, I will be able to offset DTI with 75% of the income produced from each respective property.

Buying a property outright is not a bad option either but it won’t produce a better return in the long run. 

Organization and accuracy ensure a trouble free transaction. 

This essentially produced lots of bird dogging agents for me.  

Heck, your time having to go with these people and babysit them why they trouble shoot problems in the home is worth more than the difference between a top guy and a Chuck with a Truck off Craigslist any day.

The MLS can produce good deals and brokers can produce bad ones.

I've worked there for 14 years and never had the slightest trouble."

I’ve been around...In all seriousness, let me know if you’re having trouble with your books or have any questions.