WHAT DO I NEED TO GET RID OF IN MY YUGIOH 5D'S DECK?

You have way too many monsters. You can first start off by removing most of the elemental heros to narrow down to 40 cards. Elemental heros highly concentrates on fusions, and you don't have any fusion monsters, poly, fusion gate or future fusion, so it doesn't work. You need to watch yugioh gx more. Synchron monsters concentrate on synchros. My point is that they don't match and they both focus on 2 entirely different stratagies. They work much better alone. You can make like 2 decks here.