Four Short Festive Dances - Eveland
Little Suite for Band - Standridge
Sketches of Canada - Story
Of Emerald Shires - Myers (The easiest one on the list...clarinets do not go above the break and the highest note in the trumpets is 3rd space C)

I don't think the skills and prerequisites are that much different. Make good, in tune sounds with good style and musicality. The pieces I've listed do not require any huge jump in technical ability from the more difficult grade 2's.