Nothing wrong with Updating your old decks mate, it don't make you a Noob.
Not too sure on One Day of Peace in there though, it stops you dealing damage and gives your Opponent a free draw, that card is bettter run in an Empty Jar, Exodia or some other Solitaire deck, I would run maybe Preparation of Rites and Pot of Duality over that card mate, also Upstart Goblin would be good for Deckthinning purposes and as you're running Megamorph, Upstart will help with Megamorph's effect also.