If we include investments in mortgage loans (trust deeds), real estate partnerships, REITs as well as direct property ownership, I’m at about 80%.  

Purchase price: $900,000 Cash invested: $15,000 6BB/3.5Bath 4000sf on 3.4 acres near several wedding venues.

Purchase price: $169,000 Cash invested: $35,000 Looking to put 70K into the separate garage to make a 730Sqft home.

Curious thoughts on the following scenario.Current SFR with $51k loan at 8.125%, just purchased with around 10% built-in equity on the property, $250 monthly cashflow (post expenses).

I guess the idea is to use the equity from one property to purchase the second property, and so on.

It's calculated as the ratio of your total loan amount (loan amount for purchase + loan amount for your rehab) to your total costs (purchase price + rehab budget). 95% is a good target.Avoid application and other upfront/junk fees. 

Purchase price: $155,000 Cash invested: $60,078 Sale price: $275,000 Fix & Flip property in great neighborhood in Saraland, AL.

It seems like it "should be" good with some good features for the price (specifically I'm looking for an easy way to sync pricing across platforms including my website).  

For example, include thoughtful amenities like a welcome basket, free snacks, or local guidebooks.

So, you can do a land contract for 12 months, which should allow lender to credit you full value of the land vs the purchase price, but the loan will pay off the land contract, so the lender maintains first lien position.Can't help you with the rest of your question, but you should be able to search for "CPA" here on BP to find experts to reach out to.