Just bought an Orca, and this ^ is my objective.
Any chance you could share your build??
Of course.
Coriolis EDCD Edition
A ship builder, outfitting and comparison tool for Elite Dangerous

One of the most obvious mods on this Orca is Clean Drives with Thermal Spread. Yes, it's slower than it could be using Dirty Drags, about 60 m/s which is significant. But I don't care
I wanted a cool-running Orca, and this one is. The three top optionals are used for cabins, swapping them in and out as needed for various passenger missions. Mostly I use it for sightseeing and rescue missions in Incursion systems.