Sorry I would not entertain any idea that a normal laptop would do for that. I'll offer that you may want to research the Panasonic Toughbooks.
My lovely wife's Dell laptop has finally biten the dust,it lived a good and valuable life. My wife is a cook on an offshore supply boat.
The computer doubles as a portable archive of reciepes and an entertainment center. Would like to have lots of storage space and be fairly fast for good playback of DVDs,the lighter the better and at least 15"`17" screen. I recently saw an Acer that would fit the bill and the gentleman said he paid $900.00. Any suggestions that would meet the above criteria would be appreciated,