If both sides are also welded together, it's best to use the Break tool on all verts before, and then use the multiple weld. just use the lowest settings, 0.0001 (just scroll down once on the first value) and UV lowest too (scroll down once again) and start with a low angle until it looks how you want it. Oh I forgot, before rewelding, make sure to calculate normals after breaking them so they "reset".
There is an explanation, just go on the zmod3 forums and look at the "converting from IV" tutorial, he shows everything at the beginning, how he sets it up.
Oh if you're following my suggestion, then I guess numbers-wise it's no problem, I'll leave it as the default-config with 7 characters. It's mainly the background that I'm interested in.
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And I don't see a problem with it. I think actually going without the full stickers would then make it look too empty.
EDIT: Actually seeing the real ones again I guess no stickers would make sense too, like this