Thanks for the replies.
The coilpacks I bought from AutoExtreme, so know that these are genuine new Nissan ones.
The engine timing is spot on, along with the ignition timing which I am running at 15degrees BTDC on the Plus-T.
The injectors and intake manifold are stock GT-t Neo ones, so am assuming these are fine.
I am currently running the standard GT-t side mount intercooler, so not too sure if this along with the higher compression will be running higher engine temps. I've got a Blitz return flow FMIC on order at the moment.