Is this a good Pokemon team on emerald?

It is reasonably good, maybe add a (dark/ghost/steel/psychic) type Pokemon instead of the 2 electric types to even out the weaknesses. It would be easier if you had said the levels and movesets but if you are looking to cover types, then i would suggest getting rid of the electric type you use the least, and replacing it with a (dark/ghost/steel/psychic) type as i said before.

hope this helped!!XD