[build a team] Need help with doubles !!

[Rosencrantz]

Okay guys
I've asked this in several spots on the site, buuuut nobody really gave me definite answers

so

6 pokemon team doubles

have no idea where to begin

I know I'm going to have a Kingdra in my team, but
as for the other five



I have no idea where to begin

anyone wanna help me out here?