I actually hired and fired a total of over 150 agents over 4 years.

I first bought while stationed with the Air Force in England.  

So I’m in a bit of a bind, I have a duplex I’m house hacking we remodeled entire thing, new hvac, electric panels, electric main, updated plumbing, water heaters, furnace, install central air, roof.

(forced air, steam radiator, hot water baseboard, etc)?

You could invest passively by being a private lender (earning high interest), being a money partner (getting equity and a return for no work), investing in a syndication deal (similar to money partner but on bigger deals where you are one of many investors), buying another investment property and hiring a property management company, or investing in stocks. 

If you're not comfortable with the eviction process, hire an attorney.https://guides.sll.texas.gov/landlord-tenant-law/eviction-pr... 

A 58 bps boost.Did you pull those numbers “out of the air”?  

Also, would you suggest using professional firms to do the hiring process or should I do on my own to save money?

Save the money, clean it till it shines, maybe basic improvements like a few new light fixtures or at least matching/bright lightbulbs, maybe a few new faucets, some paint touch ups and sell.If you’re hiring a Realtor®, they can tell you pricing in current condition versus pricing with a few minor changes.

I'd like to understand them enough to at least be able to hire someone to help me.