Paragon, the model was on temporary hold while I finished rlc321's Alex textures. That's done now and he's doing the instructions for it.
So now I'm back on it. Aside from a little project for Getter I'll only be working on the GP03.
Animechx, I don't have all the reference I need for decal markings. I did put a call out for help in that area at the start of this thread but no-one's stepped up yet. Until you that is.

I'd greatly appreciate any help with close-up photos of the decals please. Just for reference so that I can add those smaller marking.
I'll be basing this model on a mix between the Bandai MG kit and the G-System resin kit, her's a pic:
I'll also later be doing their orange experimental GP03 too. Same Gundam, different colour scheme. Also by G-System:
I like the more customised look, the way it has large labels and logos all over it. I think it'll make the model a little more eye catching. Kinda like Onepiece' Hi-V.
I can add all the markings, panel lines, and whatever else after I've unfolded the model by exporting the parts pages to BMP format. Then using PaintShopPro, I'll simply draw them in place and tweak the colours here and there the same way I did for Rob's Alex Gundam. The pages will be high res so that I can add more detail and that the model will print nicer.
I'm looking forward to adding it all to bring the big guy to life.