http://www.keenix.com/inprogresspages/in-progress-max-technique.html#
That is a pretty good site for something they called the Max Technique for gundam painting, something very popularly done to gundams in japan. Which in the real world, we just call it preshading. Also you can do a wash for the panel lines after you finish painting it. It's the same as your "inking", cept for we normally use very much thinned oil or acrylic paints. Acrylic paints are more recommended for easier clean ups during airbrushing processes. A lot of gundam modelers in japan uses Gunze but those Tamiya ones are just fine anyways. Basic color set will be White for the tallgeese's general color, a dark shade of grey for the joins n internal frame, and a light shade of blue (Tamiya Field or Medium Blue fit the bill well enough) for the other color on the tallgeese, and Black for the preshading and some other details. A final dull/flat overcoat will be recommended as well since you probably will be handling the model (face it, it's poseable! it's a toy! and you will play with it!).
http://www.missing-lynx.com/rareworld.htm
Here are some armor weathering techniques for a more realistic (to our world at least) finish.
BTW, a lot of the gundam guys "hang" out at the Sci-fi section of this forum.