Thanks for the help guys, I've decided to go with RC Engineering 550cc high imp with a Link(all second hand). Not sure if i'll be running a Walbro with it, I'll just have to wait and see.
I'd love to get my hands on a wideband O2 sensor as well, but that'll be awhile. I understand that the innovate WB will be a good buy?

Will be running '01 NB 265cc injectors with stock ECU and Low boost for a week till my Link comes in. Hope it can move out of the garage and run around for awhile till i get the electronics sorted out.