Perhaps thinking of a  modular style home to get it up and running quickly.

@Bradley Buxton nailed it - the one percent rule is just quick napkin math (great term by the way).

For BRRRR investors, seasoning requirements can significantly impact your ability to quickly recycle your capital.While most lenders require you to hold the loan for at least 6 months (aka "seasoning"),Fabulous 5BUY - short-term bridge financing to help you with investment property acquisition.REHAB - With up to 100% rehab financing, you can stay liquid through renovations.RENT - Tenant in place or future tenant.

Finally, speed is important—moving quickly on the rehab and resale can help minimize holding costs and increase your profit margins.

And my feeling is for MOST people Solo 401k is sufficient to meet their needs, and an actuary creating a custom plan is “overkill”.  

It became clear very quickly that the company is making all its profit on 'maintenance surcharge' and is very aggressively pushing 'maintenance' where it's needed and where it's not.

To be honest, this feels overwhelming, especially knowing I couldn’t pay it all off quickly if I had to.Out of that $900K, about $500K is tied to 30-year mortgages on my rentals, with interest rates ranging from 2.99% to 4.375% and 400k on primary at 6% 30 year.My total monthly mortgage payments are $5,500 on my rentals, and my long-term rental income is $6,850, giving me a monthly surplus of about $1,300.

Here’s a quick take on your questions:1️⃣ Do you need a business set up?

Their in-house adjusters are responsive and quick to reply. 

I am a spreadsheet junkie, so of course, I also built my own custom underwriting calculator!