Well counsellor... you're in an interestin' position. You should interview of course - that's always a good experience. Come out a coupla days early, check the place out on your own a little. Do you have any friends or colleagues here who can help you with some of your questions? If you've been in the area before, (it sounds like it, esp. from your second to last para on previous post...) you have a pretty good picture of what your line of work might be like.
You may find it lucrative, and you may network yourself in to another type of position whilst here - there are plenty of solicitors handling aquisitions, mergers and IPOs here - some very high priced help and outstandin' talent. Come on out and have a look around. Several world class firms are represented here.
Consider some of the other pilot posts on this site regardin' lifestyle, cost, services, accomadation, education for your kids. I am gonna provoke a !!!! storm with this next observation but DXB expats, in general, don't care a whole lot about their kids education... the schools here are 'private' in that they charge tuition, but they really aren't outstandin', just ordinary. One UK curriculum school - Very very good, but not outstandin'... I don' know if that means anythin' to you, but it might.
Good luck!
k-o-t-s