Alternatively, if anyone has a good deal analyzer spreadsheet for seller financing options or the sub-to strategy, I would be interested in seeing those to incorporate with my existing analysis spreadsheet. 

You don't know, what you don't know.Bigger Pockets is a great place to find a tax accountant specializing in real estate taxation.

(Usually results me less than $10,000 out of pocket on the front end) I am pretty sure wether operating independently or partnering with someone using their loan it would be the same terms.

At this stage, you can also discuss creative financing options, like seller financing, that might help bridge the gap between what you can afford and what they’d like to get for the property.

However if you didn’t calculate in at least some percentage of the rent for vacancy, repairs, and CapEx then eventually things will happen, such as a vacancy or a repair being needed and you will be out of pocket a much larger amount of money than just your $400.

Hi Kyle,Welcome to Bigger Pockets!

Quote from @Ryan Davies: We have heard of them but have chosen not to close deals through them since we have found better options.

I'm trying to see what are my options as to how could I structure a deal for the renovation of this project and the potential partnership when it’s completed .

We spend zero time comparing against other options.  

You aren't necessarily building that much equity (cost of building exceeds the value) but it is a third option that is a hybrid.Another factor is location.