There are three type of models.
1. Battlescape «model». This is just an object, and not md2-model.
2. geoscape model, this is very small and low-poly md2 model, shown only from top.
3. menu model, this should be large and detailed enough model.
About normalmaps — yes, we need all sort of maps — normal, bump, glow and so on. But they are not mandatory.
PS: I like your model, very nice work.