OK well I'll try to help. Personally I like 5 inch shield cut feathers. Left or right wing is a matter of preference unless your shooting a single bevel broadhead, then you want to match bevel to wing. More colors are available for left wing. You are probably not going to use the same shafts as your wheelie liked, just the facts of switching over I'm afraid.
Side note I'd get really bright ones for now, you'll be practicing in the snow and it's easy to loose your arrows. My wife shoots 5 inch shields in fluorescent pink, they glow through the snow and she seldom looses an arrow!