Yes that is good bloodlines. Older bloodlines but very well known lines. Impressive was a halter horse. Mr San Peppy, Peppy San Badger did a lot of different things.
Many would shy away from Impressive lines anymore even if they are n/n but those who are in the know will not keep them from purchasing a good Impressive n/n horse.
I have a granddaughter to Impressive and she is a good horse. I don't see anything wrong with having a horse that is N/N. My mare is N/N. I like the Impressive lines.