You should pick someone who believes and practices the same as yourselves. If you do not attend the Novus Ordo, avoid picking a godparent from that pool.
I pick traditional Catholics whom I know pray the rosary and actively keep the liturigical year, as we do. Then, if they live far, I just have an older couple from the chapel stand in for them.
It is ok and often better not to pick family, but be prepared that they may be offended.