The actual model of tyre choice is very very good, those AD08's will be very sticky indeed. Even if you stick with 195's there will be an amazing difference on these tyres. If you go for the 215 size you will for sure experience a very floaty feel to the steering at speed as the stsndard rims will 'squirm' around too much on the wider tyre. You will also increase weight and rolling resistance which will make the car feel less agile.
Please consider changing your order for 195's. You'll thanks us all for it later, I promise.
Cheers,
Ian.