Can I acquire 21 $200 per month doors in five years?

[Logan Jones]

I have been setting up my plan moving forward and I decided that in 5 years I want to be making $4,200 a month in passive income. I haven't found my first deal but it seems reasonable for me to hit this goal in five years. I just want to get a second and third opinion. Can I reasonably acquire 21 $200 per month cash flowing doors in my first five years?