Trying to help this easter egg hunt as well as I'm a big fan of little details on jerseys like you are mentioning. Unfortunately, I can't find any pics of of Iggy in that particular jersey with an 'A'. I do think it would be a cool jersey non the less, if you ditched the 'A' and just went with the 'NHL2000' patch. I'm sure you could find one on Ebay.
You also probably already know this but contact the poster 'NorthStarJerseys'. He is the man, and a local Alberta guy (I think?) and will absolutely help you get this project off the ground and running. Check out his IG page as well as he does specific jobs like this all the time.
Another great jersey specific resource is
http://www.nhluniforms.com/. They provide year-by-year specific jerseys down to the Pro Player logo on the bottom right of the jersey that the flames wore in 99-2000,
http://www.nhluniforms.com/1999-2000/Flames.html
Good luck! I'll chime in if I find any additional details on this.