Is this a good pokemon team for emerald? ?

that's a good line up.I would just switch graveler with with an electric type.may not sound like a good idea at first.but as soon as you get the hang of battling with that certain electric type.you'll win a lot more battles.but remember whenever you are replacing a pokemon lineup train on wild pokemon with that one pokemon.then as it goes up in level take on trainers then eventually a gym.Don't rush it though.some pokemon take longer than others.