I am primarily targeting multi-family in the Allentown and Easton PA area. 

If that is true I think you're on the right track. 

I'm looking to exchange a multi-use property I own in the Bay Area for a multifamily property in Phoenix (looking at 15-19 units).

It's not always enforced but that would be my recommendation, otherwise you have to put an alarm that chimes when it's opened to keep track of kids running outside to the pool!

Investment Info:Small multi-family (2-4 units) buy & hold investment.

I’m mostly interested in multi family homes (using the Brrr method).

Inside track to properties before they go to market/general public.2.

have a rental (multi family 2-4 units) needing major rehab. interested in learning what work can be learned/performed easily and what needs to be hired out to a contractor. recommendations for learning resources for DIY rehab (good youtube channels, etc) would greatly appreciated!

I am seeking SFH or Multi-family home investment with positive rental cash flow as my strategy.

You’re on the right track—good luck!