The Skylon: How to fly an aircraft into space - Truthloader

If you could imagine for a moment, how could you attach stuff on each end of the Skylon once it is in orbit?

The wing structure would be the strongest part of the vehicle.  The payload area is directly above it.  I'm thinking of an attachment that would go there and extend in both directions so that it can accommodate the habitat and lander on opposite ends.

The NTR would be in the payload bay.  The hydrogen for the trip back would double as radiation shielding from the reactor.  It would already be in Skylon's tanks.

Perhaps the lander could be an enhanced Dragon.  In order to leave Mars, you probably want more than the onboard Draco engines.  Perhaps a methane/lox booster that can be refueled for the trip back up.  They would separate after leaving the Skylon, and land on the Mars surface in close proximity.

Update:

A previous post about a trip to Mars.