If annuity pmt was issued after death but before proper docs filed should each heir gain immediate possession of that money?

This might depend on the contract terms of the annuity. As a general rule, your assumption is correct. However, the annuity contract likely...

In our operating agreement, do we have to capture our physical address or just use the company address for both of us?

The business address that should be on file with the secretary of state (of VA) is often an address in the state, but in Georgia LLC for example,...

it depends on the mental issue. Your son may or may not be considered legally/menatally competent. If he is competent, he can grant it to you. ...

Where is the estate supposed to be probated?

The answer will depend on state law. However, generally, an estate should be probated in the county of the decedent's residence. However, if the...

Unless the stepchildren were legally adopted, or specifically provided for under the terms of the Trust, then they would not be considered his issue.