Birthday time....ideas needed!

Evening All!

just looking for some ideas on what to get for (my) birthday, the gf being amazing has said i can have up to £450 on something (mainly cos shes mental but hey ho!)

so im thinking........Milltek or.....Coilovers? ive already got a set of 18inch neptune wheels and spacers and i was gonna get round to slapping on some springs while the winter is about but for £450 i could get coilovers and still have change to get some random bits

however.....im still toying with the idea of a milltek just to remove the standard sound of the car

the only downside to both is we are expecting a child early next year and the gf doesnt want the car too loud or too bouncy

suggestions please