I’m still figuring out the best route for financing where I could repeat the process and not deplete my funds.

If I do 80/15/5, I will deplete ~ $400 every month, but I'll have over 100k usable cash.I'm not sure whether to make big down payment to minimize the monthly cash bleeding or keep the cash as much as I can in the bank for 3rd house.

I must deplete my account by the end of 10 years.

If they wanted to stiff me for tens of thousands of dollars they could.Most people are going to pay but if you have a 100 unit apartment and 10% decide not to pay you are in big trouble or have to deplete life savings just to stay afloat.If people start thinking that it is their "right" to choose to not pay rent there may be some very disturbing trends.

You could also buy the property outright in cash and immediately get a HELOC (typically will require lower dollar thresholds than a new mortgage note) as a way to not deplete your cash reserves.

I hear a lot of people discuss using FHA for BRRRR’s but I never feel like much is discussed about how to refinance to a conventional loan, the costs associated with that (cash flow depletion, closings), etc.

We've been resolving curative title disputes for title and escrow companies, lenders and law firms Nationwide for several years on these issues and it could cost a buyer thousands of dollars and wipe out any ROI not to mention depleting your working capital if not handled properly.We're not soliciting business on this thread as we only contract with lenders, title & escrow companies, law firms and RE professionals.

I don't want that kind of carte blanche on my account.Somehow out-of-pocket (which cannot be done in the case of using SDIRA owning the rental) would be a better fit instead of depleting a retirement account that has taken years to build up.I am now wondering if this is the best investment venture and use of the SDIRA money.Who else has used there SDIRA for rental property?

Have you ever heard of Asset Depletion loans? 

As with all cities, there are good and bad areas, money making and money depleting investments.