@Jason Kim
This is an age old question that is more about Active vs Passive real estate.
Both options work, it's more about your goals that will determine your path.
If you decide to take on the rehab and management you do have the ability to increase your profits if you do it correctly, without mistakes. But you will have to commit time and energy to gain all the profits. This is active real estate, even though you are rehabbing a rental, because you are committing your time that is what makes it work.
If you decide to work with a Provider that does most of that for you and you simply are the financial backing then you will sacrifice about 10% of your potential profits, but you will gain back security and time. Of which time is the most important part of the trade off, this is Passive.
For most people it's not the ability to do it on their own, its the time commitment to makes the decision. Most people have full time jobs that are asking the same question you are. With jobs, school, kids, church, and all the other obligations in our lives most people just don't have the available time, or they don't want to sacrifice their time.
The investors that are advising you to take on the sweat equity generally have more time and they can trade that time for profits without sacrificing time with family, ect. If you are already doing real estate full time or don't have a 40-60 hour job, then you probably aren't taking time away from family and the important things.
For me time with family and doing things that are more important than money and for me is a bigger priority than a little extra profit, so my decision is easy I prefer Passive. But that doesn't mean my situation is the same as yours or anyone else.
Luckily you can do it either way, you just need to decide what is more important to you, time, or 10% of your profits?