If you have to work five days a week, work a better five days. Work on Sunday and you’ll be less distracted and able to focus better because to most other people it will be a day off. Being able to focus means you’ll also get your work done faster and usually with better quality.
By being off on Friday you’ll also enjoy being able to do all the things you’d want to do during a weekend without the weekend traffic and crowd. Again, this will make the overall experience more enjoyable.
There are innumerable benefits to moving your schedule to be slightly opposite the majority. Test it and see how it works for you.
What else could you do to your schedule to improve your effectiveness?