I doubt Lango will last that long.

My thought is that Bocca will face the trio for the final battle.
They will do significant damage, but he will still be standing.
Then Lango cone out of nowhere to finish him off.
Lizel, whose been watching the prior fight, will try to engage Lango herself, but be intercepted or taken out by Jiip.

I wonder if Gavv's V-Cinema will feature all three riders together or by 2 parts with Valen in Part 1 & Vram in Part 2

I just imagine a human-Granute conflict and all of humanity still see the riders as monsters to their eyes. And Shoma & the gang must fight for both races to coexist peacefully without fear.