I can't help you with the choice because it's all about taste. And my taste will probably be different then your taste.
But I can give you a tip: Be careful with your choice because if the design is too 'open' and you can see the brake discs very clearly, the alloys may look wonderful but at the same time the brake discs look so small which IMHO is very ugly. But on the other hand you might consider a different set of brakes as well. Novitec has a nice Porsche 993 ;o) brake set for the 147.
And nerofuoco: a lot of people may think the cadamuro bodykit destroys the design of the 147. But I can tell you my personal reaction. When you mailed me the pics of your car I thought: hmm.. But since I've seen your 147 IRL I think: nice!!
IMHO the back end of the 147 is not the strongest point of the car, but you have to learn to appreciate it. When I bought the car I was immediately in love with the front end and with the interior. I started to appreciate the back end more and more as time went by.