Genuine advice only, because I am in same shoes, we have been together for 10 yrs, my bf is in stock market and I myself (not judicial officer) but will go out for studies, so I can relate 100% with you.
I think you should stick to the job for a while, while figuring out your other options, like applying in law firms etc, I know you said you didnt like working long hours but that is the only reasonable option which will guantee you your life with your partner and stable income, it might be the hardest decision to make in your life, but if you are giving up something for love and have a strong head for it, I think you should see for other jobs since you are a judicial officer people will hire you easily and if you say that you are not inerested in law as a carrer then I think you'll eventually even get bored of your current job as well.
First of all above everything you need to weigh down your options like what all probablities you have concerning you present and future life and then make a calculated move, and it will require compromise from both side ( you and her). First atleast secure your job then go for the marriage immediately so that you can join soon after the marriage, remember always to think about yourself too and not just blindly making any decision on the present circumstances.
Lastly, if it she is meant for you, if you both are meant for each other, it will eventually happen no matter what.
I hope you have the strength and courage to take a calculated and wise decision, all the best ahead !