Starks is the best player in that whole crew. He's a top end DT in this league. But top end DT's don't command crazy dollars, so he is do-able.
Smith is not backup. He's a number 2 corner.
Hartline is a solid #2 receiver.
Long is a tough one. He's not worth top 5 LT money, but replacing him, when Ginger has so many other holes (think playmakers) to fill is another one of Ireland's patented two steps back, one step forward moves.
Bush is a good locker room presence and a solid member of a running back by committee. But he can't break the bank. He's not one of those guys. Good team player, but not a top 5 back or anything crazy.
Most of these guys are good core team guys. They all could be back at reasonable prices, though.