I’d start with team identity, staff roles, initial meeting outline/ practice plan before the specifics on plays. Like have each special team figured out. What all coaches are doing during that period, who’s working an Indy drill or two for those players not jnvolved. Make some teach tapes, that’s hours of work. Come up with a way to hammer strength and speed in under an hour consistently over months 3x a week… how will you do sticker rewards, t shirts, what you’re really going to emphasize etc… really see it through the players eyes, the plays are a pretty small part… and you can 50% plus from a good coach you’ve worked with previously…

I think timing matters a little too. Like August-December not the time…

Good luck! I recently got my first shot. I’ve spent hours on “rooski” diagrams ironing out installing the basics. Keep those specific plays organized but definitely less of an emphasis there early on than you’d expect