My wife is a diligent bookkeeper, and we have a sharp CPA doing our taxes and giving general advice.

Do you keep detailed bookkeeping for your self directed account?  

That's lower than what I'd take on a promissory note for sure, so Joe's point about making her a 1st lien-holder is a good one.0.75% per month is a shade over 9%. 0.70% per month is a shade under 9%. 0.65% per month is a shade over 8% per year.The reason I like stating the monthly interest amounts is that it makes the book-keeping very easy to do in Excel or even on a legal pad.

And additional bookkeeping. 

In addition to the upfront financing, I would recommend thinking about property management, cash management and exit strategy.PM:  200 separate properties is a lot of driving, a lot of tenant relationships, and a lot of monthly bookkeeping, a lot of mental space occupied.  

I came from a company building 50-60 homes a year (as their Project Manager), and we did that with myself, one superintendent, a bookkeeper and a field guy.

Hello All,I am going to be talking to a couple of the "Pros/Vendors" for are so sharing of their time and knowledge here this week about setting up our Solo401k accounts, but thought this might be a good question to ask here too for others that are wondering the same thing.Our situation is that there are 3 of us who currently use SDIRAs, but want to set up Solo401k accounts for the added benefits of 1) Larger yearly contributions 2) Simpler bookkeeping/taxes when using leverage inside of a retirement account 3) and the possible use of the 'loan feature' that is available in a Solo401kTwo of us are clearly self employed beyond a doubt. 

@Sarah Miller I know it was a long time ago, but I'm trying to figure out bookkeeping for my business now.What if property 1 has a repair/maintenance expense?

ALWAYS select a CPA, not just a bookkeeper and not someone that JUST knows Quickbooks

Or, is it management by committee with one person doing the leasing, another person handling the maintenance, another person handling the tenant issues, and another person handling the book keeping?