Going for the goose

Well I finally got me a smoker, got a MES 40" from SAMs club, I've heard mixed feelings about this smoker, but it was in my price range so I went for it. Ordered an amazN tube smoker, since I live at high altitude Mr Johnson recomended I go with the tube instead of the tray. I am currently marinating 7 goose breasts in a soy sauce, brown sugar and spiced marinade. This will be my first ever smoke so figured I'd go for the goose right off. Since I know nothing about smoking and I've heard goose is tricky to do and an acquired taste I figured I'd use my favorite jerky marinade to try it. Haven't decided what flavor of pellet to use yet, since they're in soy sauce I'm thinking a hickory pellet, any suggestions would be great. I'm planning on setting my temp at 200 and going till IT is around 155. Now do I set my heat and wait for it to reach 200 before I put the breasts in, or can I put them in right away? I'll post pictures once I pull them out of the marinade. Wish me luck on my first smoke and please feel free to give any advice, plan on smoking tomorrow