Glad things rearranged themselves so there was not much conflict. I don't know about ethics being involved but I find it works better for me if I am committed to one thing and finish (or abandon :-) it before trying to take on too much more and spending precious energy juggling. Anything "last minute" would seem to me to be just a miscellaneous opportunity of the type that will come again whereas working for X years on a degree, that isn't miscellaneous Good luck!