Danzig is a great line. Native/Northern Dancer has also produced tons of Hunter/Jumpers that have done well in the show ring, to my knowledge. A lot of the horses that come through the barn I’ve boarded at for the past ten years came from Finger Lake tracks and have this line somewhere in them.
My last TB had very similar lines to your mare. http://www.pedigreequery.com/pure+pro2
How is she built? My guy was built like a brick house and was very athletic. He did well in the hunter ring locally, dabbled in jumpers/eq and was great since he was built uphill and would turn on a dime. He had a heart of gold though and was really just a cool horse all around.