quoting nevent1q…7q3f11chars is too tough without GPU, renting time on a CPU cluster, or letting it run for... months? If you pick many alternate targets, you can probably hit a 7char on a reasonably modern CPU in a day. A specific 7 (like mine) took me 3 days.
Remember: each extra char sends the work required to the moon.
I think he is intending to keep this key for a long time.