Well, the current APY with SPT curation is about ~45% in SPT tokens, which will shrink over time. This is true for small and large stakes. The value of SPT to HIVE has shown an upwards trend and growing steadily. So there are a lot of good reasons to just let it sit and not think about how much money you can earn with by not selling it right away. Impossible to project one year ahead anyways.

@flauwy