I had a look, it seems the "Endurance" batteries (2C/6C/10C) will probably be enough. The "fast discharge" series (4C/13C/30C) probably aren't needed, since these are only used as aux batteries and not as stock batteries, and flight times are relatively long.I ordered the two 6S 22.2V batteries these guys offer (Titan). They are extremely low C (around 4C) so it's a bit sketchy flying the Inspire but I'll see how they go.
What do you think, Damon?