The property managers fees should be philosophically aligned with your goals as the property owners. 

Set a specific goal, then work towards it.1.

The best area really depends on your goals—whether you’re looking for steady year-round bookings, high seasonal demand, or strong appreciation.

What are your ultimate goals in your future investment? 

Quote from @Scott Vaeth: I purchased a house in South Carolina this past year with the goal of BRRRRing it.

Any one of us could give you our two cents on the math of it, but only you can decide if it makes sense based on what your specific goals are. personally, i paid points on my house because my goal was lowest possible monthly payment.

I don't know the %, but I would still guess 90% washout or never hit their goals, but I do see some "graduate" and seem to do well long term. 

Both strategies have pros and cons, but it depends on your equity, cash flow goals, and risk tolerance.

I'm unsure which focus would help me scale my portfolio and achieve my goals more efficiently. 

For podcasts I really like the Huse Hacking episodes on Bigger Pockets Podcast and other channels.