Omnipotent would make you God. That question is quite easy to refute in my opinion. God is all powerful, he can "lift" anything and create anything. If you think about it, all powerful means anything is doable.
As for the unstoppable force, I do believe that two objects that are immovable, unbreakable, unstoppable, etc. have had the results debate upon. The one that I think would most make sense is the two just pass through each other. Easier when I elaborate but I'm on mobile hehe