Weekly Sitter for Outgoing 3 year old! - Full-time / Part-time

Hi! My name is Mac, I am a young mom with a beautiful son. We are a very active and outgoing family wanting to find a sitter best suited for our unique situation! I am a new MIT so we can’t afford more than $175 a week right now til I am out of MIT. But after that we plan to increase how much we are willing to pay. The days for needing someone for our child are never the same. I get my schedule 2 weeks at a time, so I would be able to give notice of it. At this exact moment I work two 7am-6pm shifts, so we would a sitter from 7am-6:30pm and I work two 4:30pm-5:30am shifts, in which we would need a sitter 3:30pm-7pm. If my blue collar boy is there before the scheduled time we still want to pay a flat fee. Even on days where he is home before I have to go to work we still want to pay the same every week! This happens often but just in case it doesn’t happen I still want to have someone ready to be able to babysit.