@Lance Mosby Good choice Lance. I'm from the Dallas area but have been working in oil & gas (west Texas) almost 4 years. I started out as a roughneck working 28 days on and 14 days off. Now I'm on the production side with a more favorable schedule and can work on deals throughout the day.
I'm with you on the passive income, buy and hold is a good recipe to fit oil & gas schedules especially when you're in remote locations. This was the route I chose.
Hiring a property manager is a solid move, but I chose to self manage 4 of my properties in DFW while living/working in Midland, TX an average of 24 days per month. This really helped my ability to outsource and manage contractors from a distance. Now I have a foundation and a set of standards I expect from my property manager when issues occur or the turnaround on getting a quality tenant in place that will save you tons on the backend.
My advice to you would be NOT to overthink the process beyond closing on a great deal. Choose a market, zone in and get a great deal. Keep the management side in mind with your hectic schedule and circumstances, but don't let that part get in your way. Hope this helps.