Looks like a pretty tidy car, good luck with it.
Personally, I wouldn't lower it, it will probably ruin the handling and the ride. But, you're young, so I understand that you gotta do what you gotta do. I realise that you feel you need to 'make it better', so I would recommend just maybe going up a size in wheel to fill the wheelarches a bit more, rather than lowering, but whatever.
And since it's a selespeed, I would also save the money spent on mods for fixing it when it breaks again. Not if, but when.
You might want to check out ausalfa.com. They have a good forum over there that caters for a lot of the more modern Alfas, with a lot of members that care more about looking good than going fast around corners. They're generally a good bunch of blokes, and will have all the info you need to modify your car.
Good luck mate.