And be prepared to dodge potholes like a man with bubonic plague trying to french kiss you. Cheap alloys are normally cheap for a reason.
There's hundreds of people complaining about rota's and their apparently weak structure (I say apparently as I've not broken any myself) and you'll be looking at £800 for some rota's.
If you want different wheels for not too much money, look elsewhere in the brand and at other brands. You can buy OEM wheels for not too much and you know they'll take a hit should anything happen, look at Mazda for some nice wheels, the Rx-8 anniversary edition had some beautiful wheels which you can pick up for about £300 a set, they're light too. Any brand which use a 5x114(.3 if you're being fussy) stud pattern will have a nice set of wheels which you could pick up.