Best team in pokemon platinum for beating the elite four?

Your team is pretty nice; I actually play competitvely and peaked at number 5 in the world; for in-game, definitely use your starter, all 3 starters are really good. On Floatzel, get rid of surf and if you can't afford Ice Beam, get Blizzard for better coverage (or ice fang) On Gallade, get rid of Cut for Close Combat or Drain Punch, on Roserade, use Shadow Ball and Sludge Bomb (You need a move besides gr lol) On Drapion, use Cross Poison over Bug Bite. The rest looks good.