A health facility must schedule its junior and senior staff to runs its daily operations. At most 56 staff members are available per day and the facility needs at least 35 to run properly. They need at least 5 senior staff and can have at most 2 members of senior staff for every 5 members of junior staff. How many of the junior staff and how many of the senior staff should they schedule to minimize daily staffing costs? What should be the daily staffing costs in that case?