1st To everyone who said Minato isn't an Uzumaki need to show proof where it's stated one needs to be an Senju/Uzumaki to be the 9 tails Jinchuuriki. Not all Uzumaki/Senju have a large chakra supply just like how not all Uchiha's can awaken the Sharingan.Who will you think would be a better tailbeast host for ninetail fox.Minato or naruto.?
I believe minato because he have more features than naruto and more knowledgeable.etc
He will be more OP with ftg and ninetail mode
2nd what makes everyone think Minato didn't have a large chakra reserve? We see Minato using a high level sealing jutsu to keep Kushina's seal stable and giving birth thats hours. Then FTG (S class) does require chakra usage, he used rasengan (bigger than Naruto's or Jiraiya. Size=power for basic reasengan), FTG seal, Contract seal, a barrier, Death repear seal (S class), two four triagram seals and had to teleport Kurama which require the same amount of chakra as the weight of what's being teleported.
Minato was said to be admired by everyone around him, even his rival (A) respected him. The fox hated Minato for sealing him but he also hated Naruto as well. Kurama watched Naruto for 16 years, he can easily do the same with Minato and see the good in Minato like he did with Naruto.
Minato is a master analysis who is very knowledgable, he would know about separating the fox will from his chakra. Naruto said Jiraiya was trying to help him with this but it was easier for him to just give into his anger. Minato would have KM but it would take time to befriend Kurama.