One thing they'll be paying closer attention to is the experience of the operator and how that operator has shown to perform. 

If you can narrow down the ZIP code of your Wilmington property then I can give you a more specific performance comparison.

Can you provide data on rental performance and revenue for properties you manage?

Home buyers are very easily visually influenced.

Right now the only thing I could teach is the influence on the mind based on the research and reading books I did.

The type of property you choose—whether it's a project you can rehab or a ready-to-move-in option—will also influence the type of financing you'll need.

Though our 1 BR performs great, I like the idea of 2 BRs better.

Last option is to sell them - do a 1031 and roll your proceeds into a better performing property. 

As @Lucas Carl says it is important to know your enemy (competition) so that you can out perform them.

Landlords mistakenly ASSUME all PMCs offer the exact SAME SERVICES and PERFORM those services EXACTLY THE SAME WAY, so price is the only differentiator.So, the first question they usually ask a PMC is about fees - instead of asking about services and HOW those services are executed.This also leads them to ASSUME simpler is better when it comes to management contracts.