I'll add Hijack tomorrow, its getting late here and I'll probably lose patience with it if I do it now!

I followed the upgrade guide to the letter and it was a straight swap for the 10gb one. I then ran the builder file and let it do its thing until I got fed up with it stress testing, so I quit that and then ran the developer upgrade. All seems well apart from the boot time. Maybe its totally normal, i don't know.

Thanks for your help, no doubt Tony will chip in at some point!