402Fan,
With a heavy pax load in the 402 ample ballast in the AV or Nose is essential. If the checked baggage is not sufficient, we throw sand bags up there as well.
Bumping of bags for space is uncommon, bumping bags for gross weight is almost unheard of.
The A & B aft shelves are in the cabin and there is ample space for bags there. Balance is the primary concern when you start loading bags in the aft.