Steve,
Be careful about what you want. I had the choice to become a military ATCO, and whilst it would have kept me involved in the flying world, it wasn't flying.
I turned it down because I couldn't bear the idea of watching all those people doing what I wanted sooooooooo much.
If you wil be satisfied in some other aviation role then good on you. The demands, lifestyle and skills, whilst linked by the aviation field, are not the same even though they can be equally rewarding in their own unique ways. If all you do is eat, breath and dream about flying, nothing else is likely to fill that void.
Be careful what route you choose, but ultimately there will be an upturn in the market. No-one can predict the size and timing, but even now there are limited jobs out there. You never could just finish the course and guarantee a job. All that varies is the number of vacancies and by definition the competition for them.
Whether or not to embark on the flying training route is a personal decision based on an calculated risk, balanced against desire to achieve your goal. Granted it is a large risk at the moment.
Choose wisely my friend, but only you know what will satisfy your yearning.
PS. Don't even think of ATCO if you are not 120% comitted. It is a massively demanding job in its own right.