It sounds to me like you're trying to do a lot at once? I would get the short term disability extended if you can and get through the ECT and then decide what you want to do. I think if you worked this year and made $1,000 a month (disability from a job says you have a job are technically working?), you probably don't qualify this year for Social Security; I'd extend disability as long as I could (and December sounds good) and then apply in January next year or maybe look for another job for a month or two and then apply. Ask your T and doctor what they think?