"Had to get creative with some elbow fittings and extensions to make it all line up properly."
Sounds like you handled it pretty well, honestly. Did you end up using compression fittings or solder everything? Plumbing behind old walls is always a gamble... good job making it work.
Pedestal sinks can definitely be tricky, especially with older plumbing setups. I remember installing one in a 1940s house a while back—nothing lined up right, and I ended up having to solder in some custom-length copper pieces just to get the drain centered. Compression fittings would've been easier, but the space was so tight I didn't trust them long-term. Curious if you ran into any clearance issues behind the pedestal itself... sometimes that's the real headache.
I'm considering a pedestal sink too, but now I'm worried about the tight spaces you're mentioning. Did you find it hard to secure the sink properly to the wall without compromising stability or safety? That's my main concern right now...