TLDR: I do not think Kiavi operates with good business practices.

I would like to work out a payment plan whereby they pay me while I have control of the rights to the mortgage then in 10 years I pay off the principal.

Rent control on MF and if prop 33 passes (last polling I saw had it ahead) it could apply to all housing.  

Here are a couple of ways you could structure the deal:Lease Option with Seller Financing: You could lease the property with an option to buy later, allowing you to rehab it while giving the sellers time to find a 1031 replacement property.Seller Financing with Deferred Payment: Structure the seller financing with no immediate payments, allowing you to refinance once the property is appraised, and the sellers can complete the 1031 exchange when ready.Escrow Holdback: Transfer the deed into an escrow account, giving you control without immediate transfer, so the sellers can take their time with the 1031.Third-Party Facilitation: Use a qualified intermediary to hold funds and facilitate the 1031 exchange while you refinance.These options allow flexibility for both you and the sellers.

Specifically, I’d love to hear about best practices for managing shared spaces, screening tenants, and setting up house rules.Additionally, I plan to split the utilities among the tenants—any advice on how to handle this efficiently would be greatly appreciated!

Despite the inability to claim depreciation or avoid certain taxes, many investors appreciate the control an SDIRA offers, allowing them to invest directly in real estate and other alternative assets they are passionate about.I do not recommend buying tax-efficient assets like RE in the already tax-efficient IRAs.

See what other controls they offer.  

They also have a pay-as-you-go setup, so you’re not stuck in a subscription—just a simple, practical option for better skip tracing.If you haven't already I would consider giving Prime Tracers a shot.

I would like to be in control of my money, so I have always gone with the highest deductible posable and maximized cashflow.  

There are some legal considerations as well as practical considerations 1.