Well... I have been in work for the last 2 years...and now im going back to uni.
I'm not boasting, but last 2 years i have been on about £25,000 and a company car...BUT... its not everything. It was in a field i didnt want to be in, so ultimately was alot of work for something i didnt want to do for say many years of my life.
If the job is in the choosen field and you want and can see you doing that job in 10 years, definately think about doing the job.
BUT, if the job is only something you think you might want to do because the money is ok, go to Uni. Learn, get the degree and hopefully find something you want to do then work up.
Money is nice, but doing something you want to do is much more important, but thats just what ive learnt over the last 3 years!