So what are these acquaintances bringing to the table other than money?

However, at the closing table, when I received the documents, I was surprised to find that the loan contains a demand feature that allows the lender to call the note due for any reason (not just in an event of default). 

If Venmoe was frozen you could have used Zelle, PayPal, wrote a check or got cash out of your account to pay the other half of the rent you owed.From the Landlords point of view the repairs could be taken out of the back rent you owe.Many small landlords depend on the tenants paying rent on time to pay their bills and put food on the table.

Bigger Pockets family,I have a 20 unit deal on the table.

Typically sellers don't care who is buying as long as someone shows up to a closing table with the money promised.Legally, the LLC will likely need to assign the contract to you, and then you close as if you were to assign the contract to any other buyer.

Perhaps take the tax hit on one property sale and take that money off the table to live off.

Cons - May be leaving money on the table.

Both bringing so much to the table.

Game room with arcade games, pinball, pool table, shuffleboard, darts & Big Screen TV'sThen there are the peacocking elements (Things that catch someone's eye and make your place unique): fire pit with custom octaganol bench swings around it, a tee pee on the grounds, yard games, swimming pool with a water feature or LED Lighting. 

If you have 10,000 saved, and you're buying a primary home to house hack, you'll be approved for up to $200,000 (you need to come to the closing table with 5%, and don't forget closing costs are not part of that 5%, so you actually need 5% plus a couple thousand).Usually you want to ensure that you don't spend the max the bank will approve you for, because it will severely cramp your cashflow, however, if you are hacking, you can throw that concern out the window (mostly).