Hi there,
I'm afraid I can't help with point 3 (point 2?) but with regards to point one your options are:
1. Have the sides re-skinned and repainted
2. Bond tiny ali plates to the inside of the skin covering each of the holes. Then from the outside, fill the holes with filler and re-paint the panels
3. Simply fill the holes with a nut bolt and washer.
By the way, are you saying you are running 10" wide at the front??...if so, what on earth are you running on the rear
Cheers
Dave