Sounds like a excellent plan.
One great idea for Mars exploration could literally be called a “space shuttle”. It would be a large spacecraft transporter, assembled and fueled in Earth orbit, that would take spaceships from Earth orbit to Mars orbit and back.
This would mean that the spaceships would not need to carry fuel for the entire journey, just from Earth ground to orbit, then Mars orbit to ground, then Mars ground back to Mars orbit.
Doing it this way would significantly reduce turn around time between Mars missions. It could also take unmanned missions of cargo to Mars, so that the tunnels built there by the nuclear powered mining robots could be significantly improved between human missions.