I am in WI and will be using the standard WB-11 form, in addition to a land contract.Any insight is greatly appreciated. 

Did you send the letters in a standard envelope, or one of the invitation sized ones like Michael Quarles suggests?  

All properties will be built of the highest standard of energy efficiency and green products wherever possible.Supportive Housing- We will work to proliferate the company as a leader in affordable housing for individuals with disabilities through our Supportive Housing programs.

If you're planning to just purchase the duplex, you can use the standard TREC 1 to 4 Residential Purchase Contract. 

Fairly standard on a commercial loan)Taxes $250.00 Sewer and Water $333.33 Trash $150.00 (I pay this for 7 units in VT.  

We will probably do this one more time and then move to standard investment financing in the future. 

We maintain the habitability of the unit and easily meet the housing quality standard (HQS)  because our standards are higher than that of HUD and the PHA.If a Section 8 tenant veers from abiding by the terms of our rental agreement we have the additional benefit of being able to contact the tenant's case manager at the PHA and they will put pressure on the tenant to come back into compliance.

What I am asking is there more I should expect of my realtor than just a standard MLS listing; her commission is going to be about $4k after all.

And are you aware of any type of standard doc I could have a buyer sign indicating they do not intend to occupy the property, that would help clarify things?

@Hattie Dizmond Thats a good standard to go by, shows investors that you have not only yours, but also their best interest.