It's been years since I had patience enough to engage students so young. Kudos!
With a "nod to Suzuki" I suggest going easy on the reading for now and perhaps relying more on ear training and memorization. If class time is short, you will spend less time searching for sheet music or figuring out what page or measure number the group has to find to be in sync.
Success was best when I was able to connect each lesson with things they already knew. Nursery rhymes and Folk songs are a possibility. Some Popular songs are also fair game (but check out lyrics for suitability). They have been singing some of these for years.
If students vary in age and ability, you might try working out some simple arrangements with melody, rhythm or accompaniment lines. Record the various parts, so they have a ready practice assist at home.
There is insufficient time to create artists. If they enjoy the exposure and the experience in this group setting, you will have encouraged them to continue their musical exploration in yet another setting.
Put it altogether and there's music (of sorts) which may be crucial if there is a program or recital after 10 weeks.
All the best!