Babysitter - Full-time / Part-time

I have 3 kids- (5y/o boy who goes to kindergarten and is home by 2:45 pm, 3 y/o daughter who goes to daycare 9 a.m. to 4:30 pm, and a 5-month-old baby who is home). Im looking for assistance with 2 out of 3 kids caring for 5-month-old during the day, picking up my son from bus stop, making him an after school snack and doing activities with him once he is home (coloring, playing cards, homework etc). Looking to do a 10 a.m. to 6 p.m. schedule Monday to Friday.