Actually, with my low income, the lenders are asking for a signed lease to include with our documentation.  

It is the second paragraph of the preamble of a 40 page document covers it.I am not an attorney so I can't advise you in legal matters but the above is how I would handle it.

Students each year whose credit history we need to pull.  

Give them a written notice stating they are to be out in 30 days and when they do go and you have your last pow wow at the property get them to sign a document stating they understand they are giving up tenancy of the unit at such and such time property etc...

Once you are the seller agree on the specific terms, length of loan, length of amortizations, payment, interest rate etc. have an attorney write up the documents. 

Some questions though about the sale based on the bid process document that I received from my agentProperty Background: The property is fixer upper and is currently not livable (because kitchen is not functional) so I cannot get a conventional loan so planning to make an all cash offer.

Your credit score will help - Lenders don't want to lend to owners with history of bad debt, etc.  

It's all in how they document that intent.  

Additionally, my credit history is fairly young (although good, between 720 -770 depending on where I look) since I only moved to the US three years ago, I have no consumer-, student-, or car-debt, 100% payment history and no derogatory marks, but the Banks I inquired at either don't have LOC for investment properties at all, or my income is considered to low on paper, and I am trying to access some of the equity sittingThanks in advance for taking the time to answer if you can help!

That really wouldn't have helped you in the original scope of what was included but it might help you now if you'd like to document your conversations.