I'm partial to double action only revolvers, because I've seen too many cases where a cocked revolver (A) discharged unintentionally, or (B) allowed opposing counsel to falsely craft a criminal complaint or civil lawsuit alleging that this occurred, thus creating the necessary Negligence component for Manslaughter charge or wrongful death suit.
Darn near any single action revolver pull will be seen as "hair trigger," and darn few double action pulls can be brought down light enough to fit that description. Check with Ruger (SP101s are made at the Newport, NH plant, 603 863 3300) and ask what their factory spec is for minimum double action pull weight. Stay above that and you should be fine. In DA trigger jobs, I worry more about ignition problems than getting "too light."