Is Custom Lineage off the table for race? Works like human, but can look like anything you want...

Beyond that though, if you're considering the Tempest Cleric dip, I'd recommend (Half)High-Elf for Booming Blade. Synergizes great with Tempest and extends your damage potential since you're delaying extra attack. (I would also push for Crusher feat, to really optimize the 'push back 5' and give your foe a decision point'... move forward and eat more thunder damage or sit out a round. But you're pretty feat starved if you're using point buy.)