Hello
I can answer a few of those questions for you:
Alloys - anything up to 15" will fit no
problem, 16" needs a little arch work, and 17s are the biggest and need alot of work. Plus with a 1.0 you'll never get anywhere
Lowering - it all depends on what comfort you want, where you drive and how practical you need to be.
Lowering springs and shocks will give you a height drop but still stay prety comfortable.
Coilovers will give you height adjustment to set it at the perfect level for you, but give a much harder ride.
Rear spoilers - you can get one from SEAT, or VW for a Lupo, or just search on Google and see if you can find one you like.
Pictures - get an account with someone like
www.photobucket.com (its free), then follow the signs to upload a photo, and copy the [ IMG ] code to post them in a thread
Anything else?
hehe