Thank you for your question...so I am assuming that the home you purchase will be for you to live out of while you're not traveling for work, and also for your mom to live in as well?
As far as occupancy, the property simply needs to be your "primary" residence. As long as you "live" there for 6 months and 1 day, it's considered to be a primary residence. On the same token, if it is your "home base," and you are a first time home-buyer, FHA would not have any problems with your work schedule and the traveling that is needed for your career. If you would like some further information, please do not hesitate to contact me. Our company specializes in FHA and USDA loans, and would be more than happy to arrange the financing for you, not to mention interest rates have dropped dramatically from a couple months ago!
Sr. Mortgage Consultant
216-236-7266 direct line