Need help first time coaching

Hi i am coaching middel school basketball boys got only 3 days untill first game need a practice plan haven't met the kids yet. I know its not a lot of time what offense should i run and defence?

I like the 5 out motion offense.
https://www.breakthroughbasketball.com/offense/cutters.html

For defense I recommend man to man as it's the basis for all other defenses.
https://www.breakthroughbasketball.com/defense/man.html