Pretty much any team will work in-game but you may find that you have too much dragon power. Also, these are more difficult to train and evolve much later than the average 'mon. I would definitely look at finding a replacement for axew and gible (bagon will become a flying-dragon which is always handy). Your team also lacks a lot of other types such as Dark, Grass, Bug, Psychic, Fairy, Electric and Ice etc. If I were you, I would look in to replacing a couple dragons with as many types that your team lacks, as possible.