youth bow and broad heads

[wrenchman]

my youngest son has been practiceing with his bow and looking forward to bow hunting soon.
The problim i am haveing is he is shooting about 40lbs and am not sure as to what typ of broad head to youse.
I have been thinking of a cutting broad head of about 95 to 110 grains.
I would think i should stay away frome chisel points or mechanical broad heads.
I would like a few recomendations if any one has any it might help.