Well, let me start out by saying how nice it is to hear that someone has found their vocation/gift and is enjoying their work. You should find out what you will get from Social Security by opening an “account” at Social Security to see what’s in store for you. Here is a link to that page. And you should plan to wait until at least your Full Retirement Age to start collecting. There are stiff penalties for collecting before that time.
You don’t say how you’re invested inside your IRAs. This is really not the time to be trading or speculating. The best thing you can do for yourself is contribute as much as possible, and invest in a conservative mutual fund. If I were advising, I’d suggest you contact T.Rowe Price at 800-638-5660 and open a low cost IRA and invest in their Equity-Income Fund. (It’s my own favorite conservative fund for 40 years so I’m biased, I suppose!)
And then just keep working as long as you are able. Why retire?? Especially if you love what you’re doing. That’s my approach, too! Hope this works as an answer!
PS. In re-reading my answer before I post, I suggest you contact the union office. Hard to believe that you don’t have a little something coming to you!