All three properties sound like they would have to go through the probate process.You've found all three potential heirs to each of these three properties and there's a good chance that they don't seem motivated if they're not replyingOf each of the three properties has a petition for probate started? 

Tenting kills the termites that are present but does nothing on those "arriving" the second the tent is lifted. 

Make sure you know what you can get the house to appraise for and how to work with the appraiser to arrive at the number. 

So Munir and I went down to meet with them at the school so they could show us the school and tell us their plans.Well the day we arrive to do the signing, they had the school gathered in a special room and they gave us a show.  

Until that guidance arrives, Sec. 199A will best be approached cautiously, particularly in light of the reduced threshold for a substantial-understatement penalty that comes with claiming a deduction under this provision." 

Both of them are on the deed for the house, He went down to the probate court to file a petition to gain power of attorney over the property they told him that they will have to run it in the local papers for a couple weeks it's now been 2 months and they can't give him any updates on the probate.

I'm Mark Manship, newly arrived to Niceville, FL from Clovis, NM and after almost a year since first signing up for (and avoiding) BiggerPockets, I'm finally taking a deeper look and more involved approach to real estate investing. 

It does not make any difference how it is delivered but if by mail must arrive by the due date.

@Russell GronskyIRR and NPV both use the same underlying formula to arrive at a result, they just solve for different things.

At 49,000 it's overpriced.If you want arrive at 29,000 don't start there.A roof is a major expense along with other items can kill your cash flow.I would also be worried about the vintage age of a 1930 duplex.No telling how many repairs,additions were not done to code over time.Have to be really careful on this one.Before putting to much thought into it submit an LOI for your price.If they are stuck on their price go quickly to another property.Don't talk yourself into making it sound like a deal you should buy.