I'm making a Wyrwood who possibly has existed long enough to have seen everything in Ustalav's time line and it looked like a great read for that.
Before I do though I wanted to check.
erm... living that long while starting out at 1st level? That'd be hard to justify without being on the receiving end of amnesia.
Keep in mind that, as a construct, you're a lot harder to 'heal' for most groups.
It shouldn't be a problem, but ask your GM first.
Edit: The country books are pretty good about not spoiling an AP (other than letting you know that a location will be addressed in detail in the AP).