Feel free to email or DM me on BiggerPockets.Speak soon! 

@Alan HaleCan’t answer number 2 but financing has nothing to do with your profit I’m it doesn’t matter what you buy whether a car, home or pack of toothpicks, your profit is what you paid for it minus your costs/expensesWhere financing does come into play is it is a cost as money is not free - but it’s only what you have paid for that financing.Hope that makes sense

There are also some free options and obviously don't have many bells and whistles and will make it more challenging to switch to a paid accounting software. 

Hello y’all, I’ve posted something similar not too long ago, but I still feel compelled to build something incredibly unique.  

I feel like that was ridiculously steep. 

Quote from @Vasudev Kirs: A free Google account gives you 5GB of storage.Most property management software includes the ability to store documents with the tenant's records. 

I feel like a lot of these "cash" transactions are a product of homeowners sitting on record equity.

I feel like anecdotally, I've heard people leveraging debt (from a mortgage or something else?)

Feel free to reach out if you want to chat sometime.

You can use it for free, go to app.runcomps.org and enter your_best_friendThis only has Los Angeles/Ventura data (since that's where I work), but something similar could be built out if you have access to transaction-level data for your market