Yea, that'll be fine. Do reasonably well on the technical and don't be a jackass. If you can do that, you have the job.
To answer your next questions: most new hires have been getting ORD. The TA will likely pass. If movement starts to happen again, any base should be available within a few months and reserve time will drop. Reserve in IAH will still probably always be 6 to 12 months.