The tournament is 500 points only female characters open restricted.

I am using only characters with red, white, and blue.

V Powergirl 120
V Stargirl 63
E Wonder Woman
V Supergirl 148
Trickshot 20
Oracle 40
500

White Noise
Earthquake

The nice thing about the team, playability-wise, is that you have a good combination of Close and Ranged Combatants.

That said; with Supergirl's TA and 2 figs with Charge, is Trick Shot necessary?

You could use those points for Feats or to upgrade E. Wonder Woman to her Vet...

what BFC should i use?

It would hurt Stargirl slightly, but Darkness would help everyone else.

War Zone is good if you are worried your opponents will employ medics.

I like your choice of Earthquake. Even if you get Crosswinded, you won't be hurting very much when the 'quake "goes-off".

If there is a lot of Wildcard "abuse" in your area, Isolation would help against such teams...