What is needed for my team to face E4?

I am not a competitive player. My team consists of:
Raph (D. Blastoise w/ Mega Stone, Gentle, Dark Pulse, Shadow Sneak, Vacuum Wave, Aura Sphere)
Wall-E (D. Noivern, Quirky, Petal Blizzard, Mega Drain, Grass Whistle, Iron Head)
Mew (Serious, Psychic, Power-Up Punch, Ancient Power, Flame Charge)
Catalyst (D. Reuniclus, Jolly, Phantom Force, Shadow Punch, Ancient Power, Giga Drain)
Ororo (D. Gardevoir w/ Mega Stone, Calm, Shock Wave, Thunderbolt, Ice Beam, Powder Snow)
Lloyd (D. Bisharp w/ Mega Stone, Rash, Aerial Ace, Power-Up Punch, Blaze Kick, Sky Drop)
If needed, I could also swap in Omega, a Jolly Giratina with its starting moveset.

Edit: I discovered the level adjustment. Why can’t I just play casually?

Edit 2: Giving Curse to Catalyst got me past Kayla and she turned out to be the only hard one. I guess I was just being dramatic.