regarding the sleep state...the ship could have different shifts...Alpha Beta and Gamma shift...take the Enterprise-D for instance...Picard would have Alpha shift...Riker or Data would have Beta shift...and some unknown person would be commanding Gamma shift...each shift would give the ship a different battle readiness and performance. For Picard's shift the ship wuld be top performance..for Riker the ship would be at Adequate performance..and for the third shift...the ship would be less than adequate.
i don't think that can be done

would kind of be pointless anyway