I’m glad you locked in great profits on it.
No, I don’t think you should consider re-entering with a preset limit. Why? Because when the market falls like a knife,…just sitting back and being patient can pay off better than pre-set limits for re-entries. (This would not apply necessarily to averaging downs on current positions held).
We don’t know if SLV will initially get slammed along with the market or not, but if it does, it’s better to be patient and watch (any asset) sell-off deeply for quite some time before entering. Keep in mind that a bear market will usually push many prices down to ridiculous levels before rebounding. The extent of the sell-off will be just as irrational of a move as the push higher in the market was.