I know some guys that have done/are doing this. It might be too slow for arebelspy, but that's just him. Real estate is a tried and true way to wealth, if you're smart about it and you do your due diligence.
SFHs tend to have lower pre-expense profit margins than multifamilies and apartment buildings, but on the other hand, they tend to be less trouble. They're also cheaper and easier to buy on average. YMMV.
One older couple I know has a couple of SFHs that they rent out. Each house nets them about $200 a month, and while that's not a lot on its own, once you have a couple of houses, you start to make real money, and once they start to get paid off, then your income spikes.
Anyway, it's good that you're enthusiastic about this field, and yes, your plan has a strong chance of working. But be sure to do your due diligence on each and every property you buy, and if there are no good deals in a given year, then don't buy an "okay" deal just to fulfill some arbitrary quota. Also, be sure to have teams in place--for cleaning, maintenance, repairs, and other things you won't take care of by yourself--BEFORE you get the ball rolling. It'll save you a Hell of a lot of money and stress when there are hang-ups.