Christine, is looking for part time childcare in London

Hello. We are a Kenyan single-parent family, (Just Leola and I) and i will be working a full-time in central London and living in Wandsworth. Leola is turning 4 in July 2015. I need someone live-out to take care of my daughter who will be attending school from 8:45am to 3pm. Ideally, she should be able to arrive in the morning in time to prepare her for school, breakfast, prepare packed lunch, drop her off at school, pick her at 3, help with homework, prepare after school snack, plan and execute after school plans/activities to keep her busy till i get home around 7pm and prepare family dinner. She should be able to plan all meals and comfortable using public transport. There are extra duties that may involve grocery shopping, laundry, keeping the house clean etc. Kindly respond with your expected salary per week for the timings highlighted in my profile.