This isn't the answer you want. There is no answer to your question because everyone and every circumstance is different. I had two periods of depression as a child, no depression (but some hypomanic episodes) until I was about 40 and then was depressed for 2 years... more years of some hypomanic episodes then another two year depression. Now I am just getting over a short episode of depression after 18 months of "relative" stability.

How will it be for you? No one knows.