1. Don't think Tali is an option for FemShep, but all it does is affect a few dialogue options. For example, if you romanced Liara in ME1 and Tali in ME2, Liara and Tali will have a conversation about how Tali thinks Liara still has feelings for Shepard and spies on him.
2. Javik isn't available until after Palaven, even if you recruit him beforehand. If you recruit him after Palaven, he's automatically available.
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"But you have been given freedom. Freedom to be...outside."
"I am lightning...the rain transformed."