Is this a good pokemon party (Diamond)?

That is a freaking good team and where the hell did you get darkrai, arceus the god pokemon and manaphy ive ben looking for them for like ever how did you get them and what u want for them i need badly to complete pokemon dex along with loads of pokemon ruby and sapphire pokemon if you got wi-fi and can get on please give me your friend code and name please mines SIMON (all capitals) and my fc: is 2234 6938 8727