Debating which skill ticket to use...

I currently have 8 skill tickets. I'm wondering if C. Buzz at skill 6 now will be surpassed by Elsa (Queen) at skill 6 in the future... Captain Hook already scored 73 million at skill 4, and I don't know how much the score will increase if I upgrade him from 4 to 5... If anyone has Captain Hook at skill 5 or higher, could you tell me how much the score changes when upgrading from skill 4 to 5? And for those with Elsa at skill 4 or higher, how much is the efficiency and difficulty? Thank you in advance for your help!🙏