Bonjour, and welcome to the forum my friend

1) I think you can only get the bolt on filter for yours, unless it's got an injection system ??
2) The halogen one's are road legal I think m8
3) 16's will go on fine without any problems m8, 17"'s could cause some rubbing on full lock
4) As for the wipers m8, there should be a guide thingy in Halfords with regards to the sizes and stuff, not sure off the top of my head m8

As for the general, he's fine m8, I'll hopefully take you out for a spin at the weekend

P.S. I think you'll be even more impressed then last time