sprouts are evil, one of the good things about being the cook is that we never have them.
the easiest way to cook turkey is to wrap it in a double layer of foil with marg dolloped onto turkey, which is totally sealed so it sort of steams. then you ignore it till about 30 mins before the end and remove foil and baste. if you want i can give you the cooking times. let it sit for at least 30 mins and frees up oven for other things (wrap in foil, put on hotplate, or put towel on top to keep warm)
what sort of family are you? my family is quite happy eating things out of packets - so i don't bother doing the best ever food as its a bit wasted. we have roast pots, cauliflower cheese, some other vege, cranberry (jar), stuffying (which i now make, but would be fine bought), gravy made with powder, sausages/bacon bought, turkey. desert is bought christmas pudding or icecream, or mincepies - all bought and with bought custard or cream.
crowns are ok if everyone likes breast - some prefer leg in our house. its just as easy as pork to cook.
work out cooking times and what time you want to eat and do timing plan.
potential problem is size of your oven and the number of rings you have
where will everyone eat? do you have enough serving dishes, can people bring some, what about cutlery.
make the table look nice, have drinks.
we don't have starter as its too much food and i can't be bothered.
do as much as you can the night before - prep the veg, turkey.