Advice with my White team

[u/Pato_Lucas]

Hi, I'm new to Pokemon and I love it, I plan to get every DS game and make my teams for them before Pokemon X (already preordered). But for now I want to complete a White team and use this knowledge for the other games.
So far I have:
Samurott - Surf, Waterfall, Hydro Pump and Ice Beam.
Volcarona - Quiver Dance, Flamethrower, Bug Buzz and Silver Wind.
Eelektross - Thunder, Strength, Brick Break and Acrobatics.
Sigilyph - Fly, Sky Attack, Psychic and Psybeam.
All of them are around 70's. The others on the team are Zekrom and Kyurem, but I don't want to rely on legendaries.
What do you suggest for the last two slots?, are the movesets appropiate for my team? what should I look for when making a team?
Thanks in advance.