Even if it was that long you'd only be getting to the real start of the series after that. This second batch of episodes will end at a place that feels like the true start of 86. It's unfortunate but it's laying the groundwork for the world as a whole instead of advancing the overall plot.It felt like it needed 26 episode for me.
The real question is does it continue past this next season. The stuff past that point is way better than what they're about to show.