During my undergraduate training we had several indididuals in their late thirties/early 40's attending as mature age entrants. I founf they fitted in very well with the other undergraduates though they perhaps didn't fully appreciate the volume of work needed to complete the course. i.e. You need to be financially independent especially if you are married. Your family also need to be understanding of a 4 year grind. That being OK you would not have any problems during the study period.
As for getting a job following: First there's allocation (where the UNI tries to find you your first years job). Many individuals stay on as permanent employees following graduation (unless they want to travel). I would expect for someone with you years of experience would be snapped up by one of the more rural positions more that a bustling city private practice.
ANyway just some thoughts. I would look at the two stages, the Uni as one and the Post Uni as the second.
regards richard