That's our first Delma, second several places will not accept a P.O.Box as your address, like the motor vehicle department, my supplier for my insulin pump supplies and so on.

However under no circumstances are you required to accept these types of letters as valid proof of the animals status.  

Financials really don't need to be sent over until you have the deal under contract.On most of the commercial deals that I pursue, I don't see any financials until ~5 days after the offer is accepted.

Do you accept my offer?

We continue accepting and processing applications until we have a signed lease and deposit.

Trade secret: Block and pier is an acceptable foundation for many permenant foundations.

If I am the sole member of a disregarded LLC, can I rent out the property, accept rent payments, and pay the mortgage in the name of the LLC without getting a brokerage licenses?

If another bidder offered the seller their price (or any price) and the seller accepts, do you feel like you lost a great deal?

I submitted my offer last week however he accepted another one over the weekend. 

This will likely come in your due diligence period (typically the first 7-10 days after offer acceptance). 2.