I don't own a MFR but if I did I'd probably be doing exactly what you're proposing.  

If I was to was to propose that YOU(reader) get in on the action and help me fund my deal, what would you like to see from me about the potential deal...

Why don't you propose something like that to your sister?

@William Davis how do you propose doing this?

In case you haven't seen the new clarifications from last month:https://www.irs.gov/newsroom/treasury-irs-issue-proposed-regulations-on-new-opportunity-zone-tax-incentive

The amount of rental income to include in effective income is based on 75 percent of: verified prior rent collected on the units (existing property), or the appraiser’s opinion of the property’s fair monthly rental (proposed construction).

He has proposed seller financing, 10% down, interest only with a 10yr call.

I will definitely propose this to him.

I need to draft an addendum that proposes a change to the title and escrow company that will be used for a property that I intend on closing on, however, I have no experience doing this.

Proposed sales price: $300,0002 units are 2 bd 1 bathmain floor units are 1 bed, same square footage, just larger kitchen and living roomsLeases are month-to-month and $850 each for all 3 units currently rented. $2550  total monthlyTaxes were $2k last yearOwner has owned for 2.5 years and is moving out of state, was living in the now empty unit.Purchase would be owner occupied either FHA or conventional.