As part of the prep work, I'll need to talk to an investor friendly lawyer.

Should I speak with a agent, the bank, or lawyer on issues regarding paperwork? 

I figured having a lawyers name on this paper (and written by one) would show the tenants that I am prepared and not one who they think they can try and take advantage of. 

However, you're going to want to have a title company or lawyer involved to ensure the title is transferred and recorded properly.  

A special call to the county by our lawyer got that straightened out, but once again it was a struggle. 

My great grandma (who was the spitting image of Grannie in the Beverly Hillbillies, other than it was her brothers who made moonshine not her) talked about "taking in a boarder" when times where tough.Before going down this road I strongly recommend finding a knowledgeable landlord/tenant lawyer and getting a briefing on all relevant laws.

We use a one-page contract and have never had any issues, just make sure you have a lawyer write it up. 

Lawyer will handle the closing contract. 

If I were an IRS agent or lawyer, I would see that you are returning the gift your family members gave you, plus some, and disqualify the entire thing as a gift and reclassify it as a loan, because that's what it is.My suggestion would be to look into the loan option, or flat out sell them an interest in your property.

Can it be written in the purchase agreement during escrow or is it a separate contract written by a lawyer.