Ya gotta watch what ya ax for Fred.
Looks like some pretty good stuff from what I can see. Maybe even some of the cherished reddish stuff. If you have some seasoned wood already you guys might start with the bow for the 3 year old. Wouldn't take much wood for that and Dad could get a good idea about proper tillering.
I'd get that osage debarked, de sapwooded, reduced to stave form and well sealed ASAP so it can be drying...if I was 15 years younger!