I want to make a Hello Kitty! joke so badly....

Anyway to add to what Bish said making your own zimmerit isn't that hard. It doesn't have to be perfect since the real thing wasn't. I've used Squadron putty (not sure it makes a difference, I use white) and a razor saw (you can get a cheap one from Atlas at the railroad section of the hobby shop). Just spread the putty on, douse it with a good amount of rubbing alcohol and then rake though it with the saw. Make a strip about a cm long and then jog the saw about a mm, then make another strip. Keep going a cm along, jog the saw, make another cm long strip, rinse, repeat till you're done. Keep everything wet with alcohol to keep the putty from sticking too much to the saw. 

Or just use the pre-make zimmerit. I've never used the Tamiya brand and am not crazy about the Eduard PE stuff. I've only used the Cavalier brand once but really liked it. It's a thin resin that seems to fit better.

Thats a nice kit, it was my first build when i got back into the hobby after 5 years away. Even though its been done for 8 years, i still haven't gottn to finish the diorama for it.

As to the Zimm, if you want it to be realistic, then i am afraid it has to have it. I do my own Zimm so i can't help with any of the AM ones, but if you are going to start ading your own, this kit is as good as any. Or you could just build it, enjoy it and not worry about the Zimm but just knowing it not 100% accurate.

I got Fruils for mine, i have not use tamiya Indy tracks. But they look nice enough, i'll be useing the ones i got with this on my tamiya Sturmtiger.