Rainlove

Is my team any good to defeat the Dark-Gym leader? Okay, I'm at 7th street right now. I was able to get a lot of department store stickers (Last one being in Route 1 which took me like 3 hours, and a lot of guide help) Right now all Pokemons in my team have held-items. Radomus took a little bit of an effort. I had to use "Taunt" to negate Trick Room which made me win (by luck) Also, I was able to change a couple of natures on my Pokemons to suit them perfectly while I was at 7th street . This is my team, based on your knowledge of defeating the Dark-Gym leader, can I win?

Trainer: Lamassu Username here: Rainlove :3

Togetic and Sylveon with Togetic as the main base

Can someone please help me beating Noel. I can reach the point of beating 4 of his Pokemons but after that it's like impossible to win. That stupid "Swellow" and "Porygon-Z" of his are destroying all my Pokemons. This is my team and I spent a lot of time making it as it is right now. I'm sure they will get me through this: Swampert (Lonely/Damp) Lv54 -Rock Slide -Sludge Wave -Earthquake -Muddy Water Gothitelle (Gentle/Competitive) Lv50 -Charge Beam -Psychic -Dark Pulse -Heal Block Arcanine (Hardy/Flash Fire) Lv51 -Crunch -Outrage -Flamethrower -Close Combat Ampharos (Modest/Sta