How would I formally make an offer to buy the property?  

Haven't engaged him formally yet, but likely that I will.  

I will mention on smaller properties, you may not be able to tour a unit before an LOI - however on most deals over $1-$2m+ it is common occcurance to have a formal property tour. 

That is a long time to have funds tied up in the judicial system.

is an agreement made by two or more parties that leads to a formal contract, spelling out in very simple detail the structure of the deal. 

If any beneficiary doesn’t sign the petition, you must formally deliver (serve) that person with notice that you have filed the petition.

Don't think so - - that's still MINGLING of funds.Consider your entity as being 10,000 miles away and you have to formally communicate with Notary Docs, Notes, Letters from the Board of Directors - - this will help you stay focused.

With an Assumption you have to make formal application to the lender who then runs your credit, checks your income, etc just like applying for a normal mortgage loan.

Their background check results always miss criminal activity in my state I have to check the judicial site and google this names for this info.

Time for you to talk to a lawyer about getting a formal restraining order.