1

epends on what you want to put in, as you can fit about 40-50 bolter guys in each layer and theres 4 in the battle case they can also fit 4 rhino hulls.
2: That should fit.(how much infantry?)
3:Yes though might not work as well for metal models)
4: Depends on what you want to put in it as the oldsytle foam could be more space efficient depending on the model.
Also there are a allot of other case makers out there.