Yup health is the more important than the number! Rollo at 101 lbs is leaner than most dogs half his weight!GSDs are not meant to be a large-extra large breed, they're actually medium to large. My boy was 75lb at 10 months. Now he's pushing 90 at 16 months, 25,5" at the withers. Yours may or may not reach the same size. Doesn't matter as long as he's proportional. Don't see why you should worry.