Ahha, 2T2T, a lab may get you in the end then! 
Our lab x is easy peasy, really. My last lab x was, too. But the last one was 12 months when we rehomed, and this one 5 months...so not tiny babies. And not pure bred, either.
They do chew. They do like a good walk. They also usually love people and other dogs, and are easy going.
They are also the Dustbins of Dogworld (IME), and will eat anything and everything they come across - in both my pups' cases, this has meant nothing worse than an occasional unwatched sausage disappearing (along with plastic water bottle, tissues, etc etc) but I suppose if you have a lab with serious food allergies that must be a nightmare!
I am dying to see a pic of your possible-future-pup 