This type of investing is often very local. 

So how should one pursue this?

I'd agree with @Devin Peterson, best way to get this answered is to get a few quotes from different lenders and compare - either on BP Find a Lender or just googling (also if you post a version of this in the Classifieds subforum - or it might get moved there, you can interact directly with DSCR Lenders here - although this subforum is more about technical questions).

Getting distracted and sidetracked is totally normal as you get started in this business.

You want to fine tune what the answer to this is because too many people start thinking the road to financial and time freedom is a lot shorter than it is.Find some local real estate investor meetups and talk to other investors and learn about their path while you find yours.

This change has already caused a lot of buyer hesitancy, seller's with inflated expectations, and a whole lot of agents wondering how this will impact their transaction volume. 

I just did 2 cash out refi's this week on properties I have owned for awhile.

This directly impacts an investor’s ability to grow rental income.

My CPA and banker told me this is not needed.

This also works out well for appreciation.Accepting ‘zero cash flow properties’ is  really just a compromise on your part that I would suggest you not make.