D/P/Pt Six Pokemon Team - Please Rate

[Mad MOAI]

I'm creating a six-Pokemon team for competitive battling over Wi-Fi, but I only have four so far. Sooner or later I may add a Steelix, but that's been undecided so far. If you have any critique on which other two Pokemon I should use in my team, please say so.

Please note that the Pokemon listed are the future versions of the Pokemon I currently have, thus their planned EVs and moves are posted instead of the current ones, although some sets may be partially completed.

EDIT: Since no one's rated my team yet, I'll put a list of other Pokemon I would like to use, but I won't have to if there's any other possibilities that would work out better.

~Seadra
~Relicanth
~Steelix
~Sharpedo

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[F] Teppo (Magmortar)

252 Sp. Def, 253 Sp. Atk, 5 Def

Flamethrower, ???, ???, ???

Notes: Defense EVs completed.



[M] Tsubame (Swellow)

250 Atk, 252 Spd, 6 Hp, 2 Def

Aerial Ace, Double Team, Endeavor, ???

Notes: Hp EVs completed; All moves mentioned in moveset; Spd EVs completed; 2 Def EVs added.



[F] Cachenile (Wormadam - Steel)

170 Hp, 170 Def, 170 Sp. Def

Metal Sound, Captivate, Mirror Shot, Flail

Notes: No moves mentioned are in moveset thus far; Will be used as a Tank



[M] Hiroi (Machoke)

252 Atk, 252 HP, 6 Spd

Seismic Toss, Vital Throw, Wake-Up Slap, ???

Notes: Seriously needs help on the moveset.