The main thing is making sure your investments produce a return that outweighs the cost of the borrowed money.A full cash-out refinance could work down the line, but with rates where they are, you’d be trading a 6.25% ARM for something likely higher, now that it is not an owner-occupied property, which may not be worth it unless you really need the capital to scale.

You can trade more time or more risk for a slightly better price, but I would not recommend that, especially for a beginner.

By electing QBI safe harbor, you ensure that your rental activities qualify as a trade or business under §199A, provided you meet the 250-hour material participation rule and maintain proper records.

You probably have a lot of friends or relatives with money to invest and an interest in real estate, but they have no clue what to do.

Trade Schools is where they are made.

But you trade that for interest rate risk. 

I don't think you will get anyone to loan you money on tax liens/deeds. 

I tried my hand at stock trading when I was 18. very hard profession and needs a ton of Hindsight.

What are the ways to secure remaining money for this deal.

What if the deal loses money?