You won’t find many seller-financing deals here, so if you're looking to scale quickly, your next best option is the BRRRR method—using cash or hard money to acquire properties and DSCR loans to refinance into. 

Most owners who do it want to keep the option of having the building vacant when they eventually sell the place since vacant places sell much more easily then tenant-occupied ones if it's a rent controlled building.

Another option would be working with private lenders to see if they're open to your idea should you need additional funding. 

live-in-flips are a great option too!

This reduces exit options and affects the value. 10) Small number of small units is the most expensive residential development there is.

Another option could be exporting your data to a spreadsheet for manual adjustments.

I suggest your next lease have such a clause and that you make sure you can find the lease (but i have also somehow lost a lease recently).For where you are now, without a signed copy of lease i believe your options are limited.  

Or considering the membership buyout option? 

What about the utilities, property taxes, maintenance and repairs, capex, etc. are any of those optional for you?

Given your goals, Indy could be a great fit—affordable pricing, solid appreciation, and strong Section 8 demand with reliable property management options.