I'm debating cashing it out (without penalty since it was a death benefit) or rolling it over to a SDIRA. 

If you invest in, sell, or are involved in small multi family properties in Phoenix feel free to reach out and message me to see if we can maybe benefit each other from working together.Here are some of my parameters to help give an idea of what I'm looking for:2-4 unitsPhoenix and Scottsdale area (in/around the zip codes of 85014, 85016, 85008, 85251, 85254, old town scottsdale, camelback corridor, etc)Value add type deal that is either in a good area that needs a good rehab or something I can add onto maybe a duplex that has space on property to add another unit or two.Budget of up to 200kLooking forward to hopefully discussing this further with some of you!

The interest paid back to myself would only benefit my retirement, I can stop giving money to those damn dirty banks, AND, most relevant to this post, I would lower my taxable income to an all time low. 

Great way to pick up some good info and possibly a deal.You can also search NARPM.org for the RMP (Residential Management Professional) and MPM (Master Property Manager) certified.There is no benefit to sleeping with the golden plunger!

Plus what's the benefit of paying down the principal if its a rental?

A good domain definitely  helps but I think that the business on real estate  investment that most people on Biggerpockets appear to be engaged in will not benefit by paying above the normal price of around $12.00.  

And you get the benefit of having over 100 past ones to catch up on.Feel free to connect with me if you have questions.

I am most likely going to join my local one in New Jersey but is there any additional benefits to being a member of the national one?

I scheduled a meeting with a CPA to discuss some of the tax benefits/burdens.

And you get the benefit of having over 100 past ones to catch up on.Locate and attend 3 different local REIA club meetings great place to meet people gather resources and info.