Agent23
Ни шагу назад!
I don't think that those ST shuttles/runabouts have full A.I. that can self-repair or instruct you to repair everything, and you might still need to harvest materials for the replicators.
My favorite single-seater spaceship. However, I am not an engineer, nor do I think Earth companies would be able to build replacement parts, nor would I be able to afford them if I could.
I think I would go with a Starfleet shuttle as @bintananth did. Built for dummies. It has an advanced AI that can self diagnose any problems, a replicator that can build replacement parts and tools, and the AI can explain what I need to do to fix the ship. I don't need to be a trained pilot to fly it. The shuttle will pretty much never run out of power. Also comes with sensors, shields, phasers, a transporter, and highly advanced medicine. The shuttle is also big enough that I can carry some cargo and other people. I will also never run out of food.
For some rare stuff like dilithium you might even have to hop to another star system altogether.
Maybe a Borg sphere/cube would be a better choice, since you'd theoretically have the ability to control all Borg tech and drones in a given area.Wink-wink, nudge-nudge.