Why offer a vague piece of advice but not finish it?
There is little value in having the latest plate outside personal gratification, if that is your thing. Having a new plate 3 weeks later will have zero impact on the value of your car when you come to sell it, car dealers moved on from registration plates a while back. Also, buying a new Kia is not a sensible move as it will haemorrhage cash as they are usually a high depreciation brand.