Your title of the thread contains a double negative, so you are faced with going, or not not going :P - sorry, being pedantic, has been annoying me
Anyway, I did A levels without the intention of university, as I had the oppportunity at an ok ish school, most people had the attitude of why am I there then..
I had mates that went and did music courses that counted for 3 A levels, and enjoyed it, but whatever you do, make sure it does have A levels. I wouldn't enjoy trying to find a job on the basis of GCSE's if everything else goes tits up.
I have managed to sit through two years of subjects not relevant to what I would like to do; just to be safe :)
If you can get a spot on this course deferred for 2 years, and also sort out some backup stuff, that would be my advice..