That's around 73% attenuation, so on the upper end for yeasts like 1968 or S-04, especially if using extract. You can get better attenuation, but would need to do something like ferment lower, add sugar, pitch a healthy starter, pure oxygen, etc.
would I want a higher attenuation with this beer? i fermented around 63 degrees 10 days 66 7 days pitched a 1 liter starter