Is this mk3 GTi really worth all this effort?

??
I would really like to get someones opinions on this car of mine.......
The car makes a "whirring" noise when driving.. ( obviously when i floor it, cant hear Sheit over the induction kit but thats beside the point

) this noise becomes more noticable when i rest my foot on the clutch ( a bad habit but i know loads of people who do the same ) DO I NEED A NEW GEARBOX?

??
Another problem ive recently picked up is a strange problem with my headlights?!? Ive been to an auto electrician who says that his seen this before and its a COMMON problem with the mk3's?

also conveniently enough wouldnt tell me what the problem was until i paid him the £125 to fix the damn thing!!
So, i cant afford that at the moment so seen as he said its a common problem i was just wondering if anyone on here has had the same sheit?
Problem is this....... only my park lights come on when i turn the headlight switch over?? WEIRD thing is this......... when i turn my demister on..... MY HEADLIGHTS COME ON?!?!?!? so i turned my headlights off keeping the demister on and WHAM.... the headlights stay on? Now ive read here before about the headlight switches buggering out on the mk3 golfs.... but this is now my 3rd one and is just starting to p1ss me off a bit! When putting in the new switches in, everything works fine for a short while ( about a week or so ). one strange thing though is that when i put in these "new" switches onto the Dipped beam position, all the way to the right...... it now switches the Demister on?
Im going absolutely MentaL

PLEASE HELP!!!!!
Chris