I'm a longish-time investor and never knew anything about investing strategies until a few months ago when I decided to learn and do it as a second business. I'm starting with wholesaling ... and I love it!!! Yes, it's time intensive which is why it's so worth your time to pay someone to do it for you.
What I'm learning while doing it, though, is priceless.
It would seem to me, though, that if you want to stay in your area you can find properties simply by driving around a different area every week (or day, depending on your time investment). Find properties you're looking for that need work. There's a reason why the landlord gave up caring about keeping the property looking good. S/He's probably already got one foot out the door and is just waiting for someone like you to come by and offer to buy it at a reduced rate; because after you pay contractors to bring it up to a good standard you still want to be within the FMV/ARV.
For you, though, the biggest thing is vacancy rate and income.
Nonetheless, if I were you I'd be happy to pay a wholesaler. It's the difference between someone bringing a deal to you and you deciding if you want it or not; and you scouring the neighbourhood.
Whichever way you go ... enJOY it!