EF-EL XR8 Track Day Car

[ProjectXR]

Hey Guys,

I Posted this in the Falcons section but thaught i may get more help here.

Just wondering if i could get some advice. I'm looking at buying a EF-EL XR8 which would be a street/track day car(circut). It would be manual of course, and the car wouldn't stay standard for long.
One of my major concern's is brakes for the car! I definatly want to upgrade them but not sure what sort of brake package's there are for the EF-EL.
I was also wondering why the front and rear brakes are the same size? does this mean if i upgrade the front brakes i will be causing the car to be unbalanced during braking.
I was also looking for advice with suspension setup's, iv'e been speaking to a place that does a coilover setup for the front with adjustable ride hight, and lowered springs and shocks for the rear.
Would there be much difference between the live rear end on the EF-EL or is it worth going for a IRS setup, much like the AU but if any one eles has got any idea's that would be great.
Also any idea's for the engine/performance would be awesome as well.

This car would be seeing any where from 4-6 track days a year so i want to make sure i have the right go-fast bit for it. The last thing i want to do is spend alot more money swaping parts around because there not suited to the car and its use.

Thanks guys
James