For the 9 y.o., after he passes hunters ed...you should really consider a weekend trip to the NE corner to do a turkey hunt this spring.  If possible, do a guided hunt with Bearpaw outfitters, you will not regret it.  If not, do a DIY hunt and call in a nice tom for your son.  Turkey hunting is a great way to get kids going and the NE has a target rich environment.  
Though I grew up on the west side, I can't offer much help for deer / elk over there.  I know it can be frustrating because you just don't see the numbers of animals due to the brushy nature of that area.  Good luck and have fun.