I have several questions - imagine being able to split up property ownership into tiny pieces or having every transaction out there for everyone to see, all secure and tamper-proof.

I'm recommending apartments.com as my top starter pick because it is the only one I've found that is truly free to both the landlord and the tenant with no fees (monthly or transaction fees) !

Otherwise, you should work with a mortgage broker who can shop hundreds of lenders for you to help pick the best lending partner for this transaction! 

They have literally millions of users and transactions to perfect their processes and features. 

But there is nothing like real world transactions to learn for real....and to do that you'd need a Broker and you'd take on all of the overhead costs.

Google Forms are nice to input cash transactions directly into spreadsheet, to get applications from tenants, to ask virtual assistants to enter data.

Therefore could only do a quit claim deed transaction.

If you have the cash to complete the transaction as is, I would recommend simply paying the balance.  

I just asked a title rep in the area and she says they wont handle a close even as a transaction coordinator unless they write a policy for it which they cant do on a manufactured home on a rented lot.

When something goes haywire in a transaction where I am about to push a lot of money across the table, I take it as a sign.