My PM finds it difficult to gather all of the invoices provided by the vendors and upload them to Appfolio. 

That's the difficult part of marketing in general. 

that will be difficult - you'll likely be negative every month

Their requirement to return 90% of revenue to the investors makes things very difficult if they are borrowing money in a challenging rate investment. 

I'm very excited to get tarted on my real estate career started!

That's actually why I personally moved from Portland, Oregon to Columbus Ohio - to start my full time real estate investing career.

Using borrowed money is going to make it difficult because you're putting extra pressure on whatever you buy, and with prices and rates high it's going to be tough to get a return for years or even decades.  

Pike and Warren Township judges are also reported to be more difficult.

Everyone underwrites in their own way, which makes this question difficult to answer sometimes.

Too difficult to keep clean and too expensive to replace after every other tenant.