However, if have several rentals and need to deposit checks, or use a debit card to pay utilities and other bills, etc. conventional business bank account would be the best choice. 

I applaud you for your thinking in choices you have made so far.  

Also narrowing down my realtor choices to see who will be able to help me the most.

You can check out their services on their website.Another solid choice is HomeTeam Inspection Service.

If you want to work exclusively with a cost segregation provider, I suggest entering into a contract/strategic partnership with that firm.

Where strategic you use to find accredited investors?

I know you mentioned wanting to buy locally and that is always the first choice - when we have a choice.

Every person's choice is own or rent.

Some clients might not mind meeting you at properties, or you could offer them the choice to either drive themselves or join you in a rideshare, like you mentioned.

It seems like that would be a question to ask the attorney that set up the trust up.Can you not get courtroom legal defense from the attorney that set this up - or is this person just telling you comply with the subpoena you have no choice ?