Given that the hunt is only 8 months away, and given that the daughter is only 8 years old, I would get started in very short order with some mild 100gr or 120gr reduced recoil hand loads to get her acclimated to the rifle. First thought is 140gr hunting load in a 7 lb rifle might not be fun for an 8 year old girl. She might eat it up and ask for more. Or, totally shut down on the idea. However, would get started with the mild loads right away. And then work up to the hunting loads... JMO. YMMV.
