4th Gen Platinum - easy team ideas?

I want to get through this game with ease and pretty fast. Mainly just want to follow the story and then get on with completing the Pokédex once I've finished the story. So I think a team of 3/4 would be best so I don't have to grind all that much. Any ideas to help me breeze through the game?

If you're looking for the quickest time, solo with your starter, as it will become overleveled. In any base Pokemon game, that always literally works as they are fairly easy. Just buy potions and revives in case of a tough battle. Kids do it all the time, soloing with starter.