My love... My heart aches for you. Having been responsible for sorting out my Dad's affairs when he died unexpectedly, I can tell you that most of the companies you speak to will be woefully unprepared for this - as if people dying is a Very New Thing - and you will have many painful, repeated conversations trying to sort out what should be very simple, and for that I am sorry.
Your plans for the funeral and wake sound good. Bright and celebratory.
And your son sounds like he was a really great person. Generous, well-loved. I'm sorry he couldn't see that, but you did good. You raised a good human being, and he did the best he could.
Keep busy. Keep posting. Don't question the way you are feeling - I should be doing better today, I was calm yesterday. I should go out, I can't stay in forever. I should start to clear his room... There is no should. I always likened it to swimming the Channel. Sometimes you make good forward progress. Sometimes it's really hard. Sometimes you just lie on your back and stare at the sky, too exhausted to do anything other than be and stay alive. Sometimes the current takes you back a few steps. Sometimes you sink. But you'll come back up and you'll make it through.
It's just so fucking unfair that you have to. Feel free to punch anyone who says, it's times like these that make you appreciate how strong you are.
I don't need testing. I don't want these strengths. They're rubbish.
I hope today is an OK day.