How great that you have a crew of strong boys in grades 3-5! You definitely want to cultivate that and Aladdin Kids is up their alley, funny, fast paced and a good story. The music is challenging enough because of quick tempos and diction, but also familiar. There is a myriad of places to expand this cast and feature more boys and girls. Jungle Book Kids is familiar, but is a hit with casts and audiences. The humor, the timing, the hilarious characters. Does work perfectly with your age group. I agree the OOTI is difficult for this age level and Seussical JR also because they are both musically challenging and "sung through" shows, (mainly music and very little scene work). This also makes them a little more difficult to rehearse. Quite honestly, Little Mermaid JR is in the same category. LOTS of music and more complex and ideally designed for older kids than grade 3-5. HOWEVER, no one knows your kids better than you and what they can perform well and tell the story. Guys and Dolls JR is fantastic and fun for boys Alicia. We just finished the revised showkit on that one, so take a look. It has some challenges, but nothing insurmountable. Happy to compare in depth your final contestants! Sounds like a classic would fit beautifully in your line up!