fsboeira
I personally think Friday is even better as you have Saturday when a lot will come out and Sunday to fully recover.;
Actually nowadays I do it on any week day as i don´t work in the morning I have the privielege to wait for the BIg movements in the morning and go to work normally in the afternoon. However as it is your first you may as well want to have two days to feel 100% again!
Good luck!!
Fernando