Bentley sounds like a great companion while your husband is deployed.
Everyone is different. For me, having 2 is wonderful, but definitely more work. Twice the expenses too. My guys play together, but they still look to me to entertain them. Instead of one cute little guy sitting at my feet asking to go for a walk or play, I have two.
The hardest part is that I can't always take both of them on errands or what not. When I take one, the other sulks, even though he has company at home. Traveling is more complicated.
Best wishes in making your decision....and possibly looking for your second pup!