Hasn't been too bad tbh. I'm no great mechanic by any means.
Fuel pump is now installed and I did the swirl jet and regulator mods as here: http://www.christurnbull.com/projects/automotive/walbro-gss342-installation-350z-g35-fx35-etc/
Remap is booked with Horsham for 23rd, so fingers crossed for decent results!
Oh and a bigs thanks to Blade for his help and pictures from his machine to guide me through the dodgy bits.