Only Teach and Imu are major villains of this saga
Laugh tale and Roadster won't be major arcs. At best 20 chapters each
Elbaf will be like Zou or at best have 70 chapters
Shanks will lose in mini arc offscreen to Teach a la Ace vs Teach.
Only Beehive and Mariejois arcs will have 85+ chapters
You know 85 chapters are almost 3 years right?
And here you are saying that two arcs would have this many chapters. So you agree with me when I say that 5 years is not enough.
When oda mentioned that he wanted to finish in 5 years, it's been more than 1 year of that, so in theory we only have less than 4 years left. Wano was only 4 years, and it is to be expected that the final war will have a similar duration.
5 years = only 150/170 chapters
Wano: 128
Egghead so far: 30 chapters (1 year)
Do you really believe Oda will finish in 4 years?