Hopefully I can share some of the process here and give a bit of a run down...
Done so far:
Towed to workshop (my parent's... they have a garage I dont...

Will start stripping this Saturday... then pull it out and rebuild...
Spent so far:
Rocker cover gasket : R350 (Nissan)
Complete gasket set SR20/SR20DET : R1250 (Mr Mag Man Benoni)
most of the gaskets in the kit is the same as the DET but I will not be using the rocker cover gasket (DE/Redtop) and head gasket (fitting a decent one).
Head gasket is being replaced with a Greddy/Cometic one... not sure about the thickness yet tho...