MadridMan-I noticed that one item on your list was a baking bag. That was good choice. But, it also answers the basting question; not only is basteing unnecessary but it is also impossible without opening the bag. Just follow the directions and it will be fine. I have recommended to many a non-cook to use the bags.
When in doubt, I follow a basic philosophy-WWJD. (What would Julia (Child) do).
Luckily I have Thursday off and WON'T be cooking!
Good luck!
Good basic Thanksgiving turkey recipe using a bag