Here's a crack at the lighting, umbrella high and far left which is the "main". fill which seems to be pretty well equal to the main is right and a bit under eye level. A low and left back light hitting the hat, face and jacket. Another backlight to the right, it looks higher than the left one. Unless theres another one on the right for the hat I can't guess the 5th.
Either way it's quite flattering and nice lighting, I'm not the biggest fan of rim light myself so I'll say that straight up. Matter of taste really, it's distracting more often than not for me. I think it's a really good black and white conversion, very pleasing to my eye. Good job on that.
Pretty solid formalish self portrait, you have to do a whole bunch of shots sometimes hey? Expecially with longer focal lengths, I've had the same thing.