If you want to mod it be subtle. A near standard car with some tints and nice wheels and a whole ton of cleaning/polishing usually looks a lot better than the barried sheds running around with a million mods that don't fit and are often unpainted or damaged!
If you are lowering some nice eibach springs will get you a comfortable 20-25mm. Ignore the label saying 30-33. thet done go that low. while your at it, some kyb gas a just shock absorbers will smooth the ride and cancel out the slightly harsher ride from the eibach springs.
If you want an exhaust, dont go custom, try for a supersprint cat-back exhaust if you can find one or get one shipped in. custom ones are usually way to loud, and drone. the standard exhaust sounds better by far than a bad stainless steel one, trust me.
An induction kit usually loses you power unless you customise your airbox and hide it in there, and feed it fresh air (you can modify the oe intake slightly for this. I prefer getting a K&N panel filter though, its a lot easier and does the same job)
The next most popular mod is fitting polyelliptical headlights & relatively easy if you take some advice/earch for a guide on fiatBOO first.
Enjoy your car. I think the 1.8 is the best balance of fuel economy/power out of the whole range and the hlx is naturally the best spec.
Oh, a leather interior is nice to have, but your current blue/black is v nice too so dont pay over the odds.
ps, This is all my opinion only, i'm sure someone will disagree. lol.
Buzz
If you see a bandwagon, its already too late!