Ep3 geo setup

Hi Guys,
I'm looking for advice on track setups the car handles reasonably well but needs a bit more time on setup I'm currently running a pretty neutral setup as the car was going to be used for hill climbs also. I am now looking to just use the car purely for track.
Current setup
1degree camber all round
.5toe rear (I will check)
superpro castor increase bushes
extended ball joints
HSD Coilovers
rack raiser
subframe locking collar kit
10mm front spacers
225/45/17 NS2R's

Ideally I'm now looking to get
Castor increase top mounts
Progress 24mm arb
shorter track rods
and run a more aggressive setup.

Is it worth looking to run DC5 bottom arms?

Anyone help?