Owning four properties by the time I retire. Good plan?

[Zachary Balon]

Hey guys, I would love your feedback. I am 42 years old and have a plan to retire at age 67 with four properties paid off. I currently have two rentals that are worth a total of $530,000.  I owe a total of $230,00 on their mortgages. I do not have a home right now.  I am living in a rental but I am planning to do a refinance cashout so that I can buy a house for me that will cost around 500k.  I plan to put down 100k so that will leave me with a 400k mortgage. About 5 years down the road I would like to buy my fourth house so that I can retire with all four paid off.  I kind of fell into this plan.  Does it seem like a good one?