With all the great SBA resources here I am seeking to understand the following:

1) in a standard 50/40/10 SBA 504 real estate acquisition, what does the PG cover.....what amount?
2) in the same case and given the loan is fully collateralized by the real estate, when does the PG go away?

3) As an owner (<20%) in a business, can i separately use a SBA 504 to buy real estate and sign a 25 year lease with the business? or does the real estate need to be part of the same family as the business and with the same ownership %?

Thank you!