I'm no authority, especially with osage, but if I were you, i'd cut that dogleg end off...especially as its your first.
and spread the fresh end with elmers glue immediately. if the other side is checking you might cut off a little there and do the same.
with 80 inches you have plenty for a little wacking down. the 58" stave might make a bend through the handle bow.
when you get your drawknife, get rid of the sapwood,rough out your bow shaped stave leaving the ends wide and to be safe coat the entire stave with some
shellac or varnish. it'll help even the drying process and .....they both should dry for another year.
worms don't tend to like the taste of osage heart wood , so you might be ok.