Making decisions can be the hardest part (apart from the bloody waiting) @newby24. Cutting your hair is a great idea, you will probably want to buzz it off completely about day 14 when it starts to fall out, don't be surprised if that feels like its being pulled out, it can be quite painful for a couple of days.
Take care of yourself in the coming weeks, it's tempting to try to be wonder woman which, as many of us can attest, is setting yourself up for failure. Delegate and accept any offers of help that are actually helpful (sometimes people get it completely wrong, bless them) Rest when you can and remember there are no stupid questions. Good luck, you've got this, Mxx