I just started it last night, although we skipped the first adventure. My group is 5th level, and they didn't need to fight more hobgoblins. I summarized the salient points, and got them on the road to Overlook.
I think it's a pretty great time to start SoW, because the Heroic tier is well put together, IMHO. Spoilers:
I really like the idea of Githyanki playing a major role, cuz I've always wanted to have a good Astral Sea pirate fight. I think the Broken General is a great villain, and one that my players will love to fight.
I have played up the 'thinness' of the world in the Elsir vale: that the Elemental Chaos and the Feywild are a bit closer here than elsewhere. This will show true in the LMoK and the SRoU adventures.
I am also pretty sure that this is all building toward a fight with Tiamat at the very end. "Scales" of War? Cameo by Bahamut as the Birdman? Very cool stuff.
Anyway - go Ari - keep writing these! I love it. More.
And, yeah, it'd be cool to tell us what was happening. But I have enough of a buffer that I can foreshadow 5 levels ahead, and that's good enough for me.