My mix was 10# at 8 weeks and is now 75# at a little over a year old.
She will be about 1/2 her weight at 6 months old. I would not be surprised if yours is 30+ pounds by that time and 65 to 90 at full growth.
"The Second Amendment is not about duck hunting, and I know I'm not going to make very many friends saying this, but it's about our right, all of our right to be able to protect ourselves from all of you guys up there." - Dr. Suzanna Gratia Hupp, appearing before Representative Charles Schumer's committee hearings on the assault weapons ban