[The Hamsterball]

First of all, I am pretty sure this question has been covered before, so try searching next time or google it. Google is your friend.

Staggered wheels have the benefit of making initial turn in on entries of corners easier.
However, a staggered setup induces understeer, depending on how much of a difference there is between the width of the tires front and rear.

You may already know that if you do this, you won't be able to rotate tires, and if you're going to be racing, you will replace the front tires more often than the rear (alot more often).

It's usually not a bad idea to put a staggered set up on a car that is tail-happy or oversteers easily. I can't tell you if your car is like that just based on knowing it has 300whp, because it depends on your suspension set up.
Although, 300whp is a pretty sizable amount of power, so if you set your car up correctly you can make it very neutral in corners too.