My fiancee is an agent and her brother is a broker.

So the peace of mind you have when wholesaling is that your contracts will (and MUST) have an escape clause built into them.  

I recently bought a house from two brothers who had inherited the property as part of their deceased mother's estate.

(This likely means the specific project you want to do will escape but you will be better prepared for some future opportunity.)If this is a mostly one time thing, I recommend the first or the second.

My brother and I graduated Universities in 2010 and started working for Fortune 500 companies, soon to figure out corporate world was not for us.

I recently asked my brother "Have you ever wanted something so bad that you were willing to do WHATEVER it takes to get there?".

@Jeffrey Vandagriff Thanks brother.

@Robert Lytle welcome - my brother and I invest in your area (buy and hold). 

My brother and I began investing about a year ago and we are up to 10 units here in central ohio.  

Any suggestions please on drafting reasonable (acceptable to Vendor) Letter of Offer / Intent to Purchase Contract "ESCAPE" clauses?