The UB site may be a new option. I don't think we know what final costs for each location (non OP) might be.
It would be best IMO if they take a few months to look at all the options.
I would imagine the most important line item would be the eventual breakdown of WNY taxpayer share of the entire project.
I get a sneaky feeling that none of this will be finalized until after the federal infrastructure bill is passed and the possibility of some fed money
is determined.