Good tenants fix their own problems BEFORE they become your problem; let tenants create problems for you does NOT get better over time and only teaches the tenant that you bent once so they expect you to end again, and again, and again.Your business, your choice on how you manage it.

While opportunity costs can be a separate discussion, if you have a bird in the hand that hits all your specs, then it'd be silly to pass on it because of a pseudo-rule that someone else created.

Or create an LLC and use it to apply for the loan.

you did not BRRR you simply bought on terms with it sounds like a short term lender and are now refinancing you will probably need to leave your equity in as it probably not realistic to think your property with only a 6k lipstick paint rehab went up enough to create enough equity to refi out and get your 10K back.. unless you bought way under market to begin with.

Lol.There’s a start up that just raised 100 M to create a stable crypo currency.

Regarding your statement on ROI, I would say, I would be looking for a higher yield than the stock market, but I also intend on creating passive income with proper cash flow. 

If you create an LLC, you will get taxed on all the profits whether or not they are distributed. 

If you want to live off of your real estate you need to create an active real estate business.

The biggest downside overall was dealing with the park owner who had to approve the buyer before I could sell my house.My advice - if you think it through and create a system that will work for you, pretty much any business can succeed.

Sure, I can create a  a land trust and pass the interest to a LLC as beneficiary to protect my credit score and to reduce - not to eliminate - some risk.