There doesn't necessarily have to be an agreement between the Hokage and the Council of Fire in choosing a Hokage. Remember Tobirama Senju, right before leaving to fight the Kinkaku Force (the twenty Kumogakure ninja)? He gave the position to Hiruzen, and I'm fairly certain there were no elders or Fire lords to finalize Tobirama's decision. It can be done by the Hokage himself should the situation call for it.what are you trying to prove him wrong here?. To choose a hokage there has to be agreement between the elders, hokage, Fire Nation Lord and his nobles. Plus, I don't see anywhere where it says the third hokage chose Minato as his successor. Minato was a big impact during the third war. Minato was feared by commanders of nation. Minato was the one to end the third war as well. He was of big help in the third war and I am sure even the Lord of the Fire Nation notice him as well as the other elders. As a reward for the job he did for the Fire Nation and not just konoha he was rewarded with the option to become hokage. This is how I see it.
He would teleported Orochimaru to another place and defeat him without J-man or tsunade knowing where minato went with oro. Then he would come back and take Tsunade and defeat her. After that he would take J-man and use all his remaining strength and abilities to defeat him.
How would he accomplish this you may ask. When minato took to the nine tail demon fox to another place, he didn't even need to touch the nine tail demon fox. This means that he wouldn't even need to get close to oro or the other three to teleport them and there wouldn't be a way to prevent it. I don't see how. I think minato chooses with his mind his target to teleport which is somewhat like amaterasu but only faster.
Hiruzen was simply looking for a successor to the title of Hokage, and while he wanted to choose Orochimaru, selected Minato because he knew Orochimaru would only use the title to further his own ambitions. It wasn't a reward Minato was offered to become Hokage. He was chosen by Hiruzen to succeed, and the rest of the council of Fire went along with the decision.
I don't mean to offend you, but really, you make the Sannin look so weak compared to Minato. He would teleport Orochimaru, defeat him in a couple of minutes, do the same with Tsunade, then go back to finish Jiraiya. You actually think some of the most powerful ninja to live would go down that easily? It amazes me to tell you the truth. But I won't argue. You seem to cling to your opinion quite firmly.