At the end of the day, nothing is free, you will pay the price for free in expensive mistakes or lost opportunity cost or time lost or money or all the above.  

In the term sheet it should say if they do not fund then a part or all of the deposit is returned.  

This is common when a borrower moves for work reasons​.Increase in Family Size: If the borrower's current residence becomes inadequate due to an increase in family size, they may qualify for a second FHA loan.

Another option is finding a deal where the owner will seller finance some or all of the down payment portion and is okay being in 2nd position.

I am looking to sell some or all of my properties.

3) If I were to create a rental agreement essentially leasing my Home office space to any or all of these LLCs, can each of these LLC's have a separate Rental agreement with same residence ?

These are properties you can rehab and furnish yourself, with the potential to refinance and pull out some or all of your initial investment. 

Flat rate is assigning a charge to each task , now if they say before the job they charge 2 hours to change a bulb , thats what you pay , if it takes 10 minutes , or all day . 

This sounds like an excellent candidate for a "wrap" or all inclusive deed of trust where you would pay the seller and lender (through a title company or loan servicing company) the new, agreed upon payment based on what terms you negotiate. 

You can be one, two or all three persons in this deal.