If you were to purchase a $200K home that cash flows $100 a month in Baltimore after 5 years maybe you have built $20k in equity. 

Thinking about your situation in the same manner you have 62k in equity and make 2500 per year (2 months to taxes and insurance) it would take nearly 25 years to get back that 62k assuming you do all the work yourself and a 0% vacancy factor. 

and to understand how they fit together in your toolbox, as none will give you everything (e.g, insurance is required and it will cover you for many situations, but not always; asset protection (LLC) is litigation insurance and complements regular insurance, by minimizing the target and making it unappealing).If you are a new investor, probably you will not have a lot of assets and/or equity to worry about (but even that is relative and subjective to each person tolerance to risk) so I would not worry about that till you pass that risk threshold (in my opinion 100K+ in equity, maybe 50K if you are really risk adverse) and you should be primarily concerned with finding good deals and growing your business first.

Buying a fixer upper via a 203k loan could be a good way to start off if you can handle the stress of a renovation as you can "build in" equity to the deal, live there for a couple of years while you're fixing it up and/or renting it out after which you have many options.

I'll probably have around 200-300k in equity so Instead of paying down the credit card debt I've accumulated, I'm thinking about scooping up a property in Puerto Rico to pay it for me.

I am new to this, and would like to get a realistic idea of how much  I expect in equity by taking on this risk?

If you have 500 k in equity total with 3 properties and you want to buy a fourth for 200k,  can that equity be accessed without refinancing the 3 properties already owned?  

Over the past five years, owners of starter homes have experienced a 44.4 percent growth in equity — 17.8 percentage points more than owners of luxury homes (26.6 percent)."

Both bought in 2011 both cash flow over 700+ a month and have doubled in equity.

$900K in equity with a opportunity value of 10% is worth $7497/month.