Hello Matt
Here is my feedback:
a) I think you are wise not to go to the party. At 19 day sober it is way too early plus who wants to be around a bunch of drunken fools in a beer smelling hall?
b) With the job situation, I would suggest that you look for a job but since you have a little financial cushion focus on getting something you really want to do.
You do not have any financial pressures, you don't have to take a Mac job that you'd hate so you can truly go job "hunting" instead of job "grasping".
It will still leave you plenty of time to work on your recovery.
Congrats on 19 days sober and wishing you thousands more