I'm using standard rad on my xr2 which has been fine. I use a cossie external fuel pump with a facet red top feeding the swirl pot.
I'm using standard 2.0 cams on mine too.

I've got a 2wd cossie front mount cooler id sell mate.

Have you got any boost control? Would advise an ebc!

Are brakes and suspension up to job?

Wideband AFR gauge?