I don't think your sink was intended to be a console, but I suspect that with the right legs, it could be made to work like one. In general, I think a good portion of the weight of most console sinks is designed to be held from the wall using a cleat of some type. So I'd check the part of the sink that goes against the wall to see if there's any support structure there. If not - or potentially, even if there is - it could be your best route is to go custom. You seem to be aware of the high price of console legs (Yikes! I'm in the wrong business!) If you were willing to consider wood (I've seen some lovely ones) or black-painted metal, I'm betting you could have a frame and legs made for less than most metal sets. With regard to period-appropriateness -- I'm thinking that most consoles were before the 1950's.

I was looking at getting this sink for our powder bathroom. Did you end up using it?

Photos? Drawing with measurements?

You shouldn't have any problems plumbing a new sink.