I just started hunting in that area myself and there've been a few potential deals. 

I'll be in Houston the week of April 14th, and I'm schedule appts now to connect with clients and potential new clients. 

I have a 5bd/2.5ba property that I am looking to rent and am curious about the Section 8 program given that many residents and potential tenants in this neighborhood pay their rent with Section 8 vouchers.

Sign a representation agreement with him for any potential deals he brings your way, and you both win.

Would you send over the offer terms in a seller-financing contract or send over the potential returns for seller based on analysis?

If it’s a stable property, 30 years wouldn’t hurt but 15 years might lend itself to a riskier investment as you wouldn’t be tied to it as long. 

Tons of SFH with potential separate spaces.

Then some time on understanding risk and how to manage potential downside vs expected upside.

They will likely already know who is in the area, who wants to be in the area, and what other projects are in the works and further along than yours which may remove potential tenants from the conversation.

In the past I have asked for a higher deposit but I just dont want to deal with any potential non payment issues nor evictions.