I imagine lenders won't loan up to the desired LTV (ie: 70-75%).

It has pockets that are still growing giving you opportunity to land some great deals, while already having some great neighborhoods, some very desirable.

They tend to be in less desirable areas or attract lower quality tenants. 

I'm looking to buy a fixer upper in Ohio but there are so many properties for sale there. What are some tips on what type of property to acquire and renovate that is likely to sell faster?

Appraisers base their assessments on recent similar property transactions in the region, not only your purchase price or desired loan amount, and they take into account market trends, so a short ownership term is unlikely to increase the worth of your property.

But you may not enjoy book keeping or think your time is more valuable spent elsewhere, hence the desire to outsource services to low cost service providers in India. 

I have no desire to build an empire.  

Yea cash flow is obviously the most desirable outcome, but I just felt like the loan pay down aspect of it seems to always be dismissed as if it doesn’t exist.

I always recommend investing in areas with strong underlying fundamentals: jobs, limited housing supply, desirability/ high demand, population growth/ net in-migration, affordability, etc.

See the 2020 aerial view below.Very little undeveloped private land is left in the Las Vegas Valley, and desirable areas cost more than $1 million per acre.