ok that helps a mile!
I'm by no means a guru but this is my ideas.....
first up....road tyres (even good ones). probably ok for 1-3 laps at a high pressure. after that you would be in trouble but at superlap that's not an issue.
compared to my car you make 100kw more and weigh about the same, but you have crap (relitively) tyres. and much harder springs and same or harder bars. its a gtr, right?
so....
less camber front and much less rear. your car will slide before it rolls up on the tyre too much. and you don't want much camber on the rear because it will lead to wheelspin.
front camber 2.5o, rear camber 1.5o or even 1.0o. Maybe .25o more on the right front
castor - as much as you can get without rubbing as always. 7o is heaps in a 4wd I am surprised you could get there without issues (then again r33 is much better at the front than r32)
toe front....I run 1mm out but I think that is a personal preference. I've heard of people running between 1-3mm out per side. More will be dartier (ie feel like it turns in better) but ultimately will have less grip IMHO.
toe rear....depends how much you like the tail to move. +2mm for very stable, +1mm for normal/neutral or 0mm for unexpected mid corner oversteer (can help with mid corner understeer for a flat out lap like superlap).
pressure...what tyres? assuming falken rsr or kumho ku36 or similar I would run about 40psi hot and check how it feels. Yes it is very high but it really helps in hard tyres, especially for only a few laps.
BTW no matter what with road tyres you will rip up your outside front. If you can take a spare outside front for the weekend and change it after practice.
also...just be stable in turn 1 (ie settle it early and keep it smooth), and be very patient in turn 2 (apex is the end of the ripple strip on the exit on bad tyres). don't fall for what you see the super taxis do it wont work on road tyres