Just wanted to give an update:
This is probably going to seem like I'm extremely slow, but I just now completed my first step, which is the initial washing of the parts. I sprayed them with Simple Green, then brushed them lightly with one of those stiff-bristle toothbrushes from an army issue gun cleaning kit, then I soaked them in warm water with a splash of Ajax dish detergent, rinsed with distilled water and blew dry with a can of compressed air followed by blotting with paper towel. In the future, I'm going to use my airbrush to blow dry instead of wasting $ on cans. I told you guys I was slow and meticulous, haha!
I still haven't purchased my paints yet, but I am almost 100% on colors. I've been doing a TON of research. Not to sound like I'm flattering, but I pretty much use this forum as a no-BS checker for gathered info. I have pretty much settled on using enamels for everything except the vinyl tracks, where I'll use acrylics. I've decided on Model Master Olive Drab (ANA 613) for the exterior, and Humbrol Beige Green for the interior. Whoever reminded me to paint the floor pan in the troop compartment aluminum, thanks a bunch for that! And the advice on the color of the tracks is huge too! I knew something didn't settle with me just right when I see a lot of the armor models done with extremely rusty tracks - definitely if they had been sitting somewhere for long periods, but not if they were moving regularly. I'm actually considering leaving the tracks supplied in the kit their original color, which is a gun metal kind of color, and dry-brushing steel and silver for wear, black on the pads, and an overall dusting of a light brown/tan color for a little dirt. I still haven't decided whether I'm going to prime the tracks first or not, since the base I have in mind is very similar to the color they are already. My main concern here is paint adhesion, but from what I've researched it appears I should be okay if I use acrylics, or even pigments, with acrylic thinner
My next step is to build my sub-assemblies and order my paints, and to get some practice in with my airbrush. I took it apart, cleaned, and re-assembled it the other night, but I haven't hooked it up and run anything through it yet. By the time my paints arrive, I should be ready to throw some colors down!