Seasonal jobs that might turn permanent (Detroit)

A staffing agency says some roles convert to permanent after 13 weeks. I have read a lot of threads here and could not find my exact situation. Hours ramp up in the coming weeks. Is it worth applying to several at once?

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.

Apply to several. Start dates and schedules change quickly and having options helps.