I'm actually excited about the prospect of finally owning some rentals, as I've wanted to do it for a long time but I let life get in the way. 

And you likely haven't faced life on a downturn, it all comes down at once and it's kind of correlated professionally and personally. 

The Title company does  a search to see if the person selling has the legal capacity to sell, to find any  other owners, mortgages and liens on the property and to identify anything that may affect ownership to the new buyer.This is all done prior to signing for transferring ownership.It is not related to doing the Lease or the Option.Yes, the option fee is used as the down payment.

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

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

I also own a personal vacation home in the Poconos.

If it's a consultation with him personally - it should be very valuable.

It could me my life changing path.2.

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

Quote from @Jerryll Noorden:MAYYYYBE  interconnect 400 super comuters together and feed it every single piece of data on this planet and construct a real life emulator/simulater with every person's artifical character on that simulation where every user has inputter their life's journey...