As previously stated....wait on the marriage thing!
As far as staying together and flying....yeah, do it. You will both finish around the same time, and Riddle needs instructors bad....I believe they even removed the 200 dual given requirement. So instruct at riddle for a bit, date another year or two...move to a regional together, etc etc.
I would try to stay away from DFW though...I was just based there for a month and a half....the US is nice and kinda somewhat sort of big.....explore it!
For the young part of your life, try to get hired with the same companies so you have about the same schedules / domiciles...and then when she gets enough flight time, have her get a nice job at fed ex / ups / major / nice corporate gig, and you can be a stay at home husband =)
-Imp