Unless you're tracking the car just get the brembo rotors/MM pads/SS brake lines/Motul fluid package that is offered by vendors here for around $500. That and along with wider front tires (your new wheels) will give you the same braking for panic stops as the $2000 packages and will be a nice improvement for agressive street driving. Of course new larger calipers would look great under those new wheels but that's your call as far as the extra $1500.