If the French and Indian War had not occurred, do you think the Continental Army would have been experienced enough to fight the British army?

No, the 13 colonies were created for profit, they were used for mercantilism. The Continental Army was an undisciplined, incompetent military force with improper uniforms and sloppy tactics (at least at the beginning of the war). The British Army was the world's elite military force, fresh from the success of the worldwide Seven Years War against France and its allies.

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.