To Buy and Hold or Not!! Need Help

[Joe Threats]

Ok so I'm in visiting In-laws in Florida and came across a duplex. I'm looking for creative ways to possibly go back to the seller and possible get the deal done.

 Sale Price 365,000

Side A rents $1500

 Both are Section 8 

Side B rents for $1600

ROI More than 10 percent annually

Taxes Per $4200

Insurance $2900

I would really like to get my second buy and hold property but I'm wanting to know the best creative way to to purchase this fast. I'm thinking some type of seller financing options. 

Also should I ask to see her books? Thanks in advance for any suggestions!