Well, despite the high difficulty with your skills you have been able to take advantage of the experience and the items sometimes one must make that difficult cost-benefit decision to take a risk. Good that you were able to find the emergency exits in case you needed to get out if things got complicated but apparently you planned it so well that it wasn't necessary and good that you were sensible not to fight against that boss.
I wish you a good end of the year, a prosperous adventure and a Merry Christmas.