Keyboard pocket (electric piano - 61 keys) with compartment for laptop?

Yes, that's what's up there. Have already searched on Amazon, but found nothing suitable, or I was unsure if the side pocket is sufficient.

You will need to carry the laptop better in an extra bag.

Of course there are Casebauer like MGM or Amptown, which you can build a rollcase in your favorite color with a compartment for a laptop. That weighs but then about 40 kg

Here's MGM in Midnight Blue-Foliertes Caseholz with patent rolls for my 88er