From '12's experience I'd jump on it (it's getting late.) Was QB on a state(large)-ranked team for two years and coaches were well aware of it and the brutal time commitment for both from his bio, and the fact film and lifting was on Saturdays. Some schools like getting already toughened FB players. Expect yours to be the strongest frosh if he's sticking to his lifting plan. My guess is that the stud high 80's Ps are already spoken for so he may end up hitting just fine against lower '13s, '14s or even 15's. Nonetheless, and others may chime in, it seems particular attention is paid to the onfield cage session where usually an AC or current player is short-throwing BP speed, and your player is asked to pull/HnR/oppo. During sim games, it seems the focus tends toward Ps.