benzamaRealMadrid found the best routes for you to get an award. I think the best way to redeem them is for the TATL part of your journey. But you would need to get some more Ultimate Rewards on your SP as saver awards are 30k one-way per person.

The YS+ sign in his post means there is economy award space.

Flights within Greece are usually cheap, like most of Europe.

Good Luck.