How does everyone feel about investing in Oklahoma?

I would suggest that you find a partner or mento who has done it before.Many of the investors that I work with in your position find that buying New Construction investment property from a builder is a better option. 

I work with out-of-state investors and would be happy to share my experience and how I can help you in your next investment purchase.

Or just sell it at a loss… I need some guidance here, I know very little about real estate investing other than I know I’ll be losing money after maintenance and paying a property manager.

One of my favorite states for OSS investments is Florida.

How long have you been in investing ? 

You should consult with local property managers and find what the average DOM would be to lease your home and rental rates etc. this would be a good starting point. 

I would consider selling one of the properties, paying off the debt, creating a reserve for your remaining investment, and ensuring you are 100% financially stable before you invest again.

Start with BiggerPockets Ultimate Beginners Guide (free).

Because my DIT is low, maybe Case 2 for fourplex is my preferred loan type than Case 1 if I want to invest locally.