@Kon Zel thanks for the reply, I don’t think I am eligible to be put on the mortgage as I don’t have Any proof of income from the past two years.

I would either send certified mail or heavily document for the proof you sent it.Just as a side - I wouldn't use a lease that says they are responsible until someone else moves in, just a lease break fee of 1 or 2 months and move on from them. 

Also, what documents would be needed to show proof of primary residency?

I opened a bank account at Bank Of America and they know what my salary is based on what I told them, but never showed any proof of that and it's approximately 80,000$ a year .

I also would make your final closing depending on both property inspection reports (consider this a good investment expense if go for these higher than normal comps asking prices), consider adding a depending clause on getting a current appraisal value as part of your offering contract, and proof of section 8 passed standards for both properties (this is in my opinion you need because the seller is increasing the values based on these properties being at section 8 standards).

@James Wise I had to replace carpet in an infested house with laminate thinking that would fix it but no.Spent a lot on various fumigation without desired results.However, I read about rubbing alcohol+ mint oil mixture...works like a charm.Make sure you find their 'nest' and apply it there.Just go crazy with it and apply it everywhere.They will die on contact.You may need to get rid of furniture that may serve as hideout for them.Springbox is notorious for this.Goodluck.!

HUDs guidance memo does state if the disability is not readily apparent you may request proof from a "physician, psychiatrist, social worker, or a mental health professional."

Is that something you still need proof of income to obtain? 

With this, you can even "Save as a PDF" and it results in a sheet that you can print out to present as proof of an ARV or as part of your marketing package if you're a wholesaler.

Improvements don’t need to be fancy but they do need to be bullet proof (figuratively speaking).No carpet.