I know the theory is to wait for outside potty training until all the shots are completed, but, with the blessing of my vet, I started outdoor potty the day we brought him home at 8 weeks. I was very cautious about scanning our yard for strange poop, and he was limited to a small area in our front yard that I raked - it was set back from the road so I was confident no dogs would go there. I had no problems and it made training so much easier. I am just not a believer of potty training on wee wee pads, and then breaking THAT habit at 16 weeks( when the shots are complete), especially with the bulldog mentality! lol! Just be careful, watch for droppings, acorns, and anything your little guy might want to eat! He is beautiful by-the-way! Good luck!!
PS: I LOVE his name!!