Yes, you can, if you keep it cold in storage. Still, it's not good for more than a couple of months. Where you live you could probably store it outside to keep it cold, but in South Louisiana that technique is pretty unreliable, and it's a PITA to use up fridge space for a minimum of 3 gallons of cooking oil.
What we sometimes do to save some money is to get used oil from a Chinese restaurant, and run it through some cheesecloth. It still works well.
As to the sides we have, let's see. It varies a bit, but there are the usual favorites, plus extras for any special guests we might have who have allergies or such. (We have a family tradition of inviting anyone we know who cannot make it home for the holidays.)
At various times, the list has included mashed potatoes, sweet potatoes, green beans, broccoli casserole, stuffed mirlitons, spinach Madeleine, glazed carrots, green salad, fruit salad, canned cranberry jelly, fresh cranberry relish, oyster dressing, rice dressing, cornbread dressing, sweet corn, cornbread, hot french bread, cauliflower w/ Bechamel sauce, parsnips, turnips, brussels sprouts w/ bacon, mac and cheese, braised cabbage, squash, peas, beets w/ onions, sweet onion pie, and gravy. Sometimes we also throw in a ham and/or a beef roast.
The desserts are MOSTLY made ahead, but there is usually someone who ends up constructing something last-minute with any unused dishes that remain. Mostly we have pecan, pumpkin, apple and lemon pies, brownies, Mississippi Mud, and fruitcake, plus ice cream.