Some things you write sound a bit manic so it would be worth talking with a pdoc about it. I guess it really boils down to the questions, "is your life affected by these episodes" and "are they out of character for you"
There are many people who make bizarre decisions or start but don't finish projects that are not BP.
Remember that the treatment for BP is lifelong meds that often have side effects and can be expensive so only go on the meds if these behaviours are negatively affecting your life.
Hope this helps.