First, congrats on that Masters !!


Thats alot of work-AND your 30th Birthday? You TOTALLY deserve a B!!
That said, and please take my opinion for what its worth ( possibly nothing), it seems as though you may be compromising. The colors on your wishlist are all darker ( and perhaps a bit more classic?)and may reflect what you are truly more comfortable with ( note your dress and shoes). You have also listed RGHW, but this may be much harder to find and may not be as much of a deal breaker as the color.
IF you are comfortable, I might vote to politely decline, stressing how much you want a noir/blue nuit/etain for this VERY SPECIAL SET OF EVENTS ( hint, hint!!). It will always be your first Birkin and you want to love it forever- if you can't that's your answer. It certainly can be made to happen in 6 weeks. All fingers and toes crossed for a great outcome.
Regardless, SO proud of you!! Congrats on your achievement !