There was a recent post here on BP where the person lost all their money in several deals and would not call out the sponsor.

At some point, it may just become personal preference. 

I am aware that NJ has a personal occupancy provision in which the landlord gives at least 2 months written notice stating that the owner would like to occupy the downstairs unit once the tenants lease expires.

They have successfully closed multiple syndications using this plan, but it appears to me that the one I am currently invested in may be struggling.  

I have a tenant who knows I am the owner, and I personally prefer that. 

I do that personally...and my employer does it as well. 

HiCan I as the administrator of the deceased estate use a PO Box for the administrator address and not my personal address?

I also own a personal vacation home in the Poconos.

So I bought this house for me as personal residence & did live there the 1st year.

You need to look at your personal risk/reward factor.