Photoshop -> Gimp (Open source $0) or Affinity Photo ($49.99)
Illustrator -> Sketch ($99/yr) or Affinity Designer ($49.99)
Sketch requires macOS Sierra (10.12.2) or newer. Your license comes with a year’s worth of updates. Once that year is up, you can keep using the last version of Sketch you downloaded, forever.
Motion editing – Apple Motion ($49.99), Natron (Open source $0). Natron review
Planning to install Gimp, Natron on iMac.
Sketch is already installed on iMacs in Koa103.