I am looking for before and after school care for our 2 children, a boy age 7 and a girl age 4,...

I am looking for before and after school care for our 2 children, a boy age 7 and a girl age 4, from Monday to Friday. I would like the sitter to have a valid driver's licence and use of own vehicle. Care would include pick up from school to home, meal preperation and play and/or homework supervision. It is rare, but some evenings may require working later and would include giving children a bath and putting them to bed. Care would be part-time until school ends, at which time I will require full-time care until September. I would also require cleaning of our 3 bedroom home once per week and some possible grocery and/or errands may also be required from time to time.