Black circles have a 15% sale on the mps4s for the fronts today but sadly I couldn't find the tyres for the rear.
Interestingly continental sport contact 7s are available at the front and they're probably great tyres while they have tread. And they're much cheaper than the michies
I had driven with mixed tyres for over a year without ever feeling the car is unbalanced. I wouldn't hesitate suggesting going mps4s on the front and if they don't come come back in stock then something else like f1 supersports on the back or a tyre fitter might be able to get you a very slightly different tyre size to fit on the rims. The 19 30 285 tyre size is a giant pain in the ass to find shoes for
More on topic beans heated in butter, cumin, fried onions and garnished with coriander with your fried eggs is like a straigh pipe exhaust , antisocial but nails all the right notes