Rate my In-Game HGSS team?

Should definitely try to get each pokemon above 45 at least. Poliwrath is a good pokemon. However, you have 3 pokemon that are weak against ice (pidgeot, meganium, machoke) If you can't evolve machoke maybe go for a different fighting pokemon like lucario (he can also learn a dragon pulse). Switch pidgeot with skarmory or salamence if possible. hoped this helped.