After a bit of messing around with track on a Monday night, listening to 5 live, I have come up with the following revised trackplan:

-Peco 76' turntable abandoned, smaller (50'?) to be sourced at a later time (tips welcome on where to find one!)
-completion of turntable baseboard put on hold
-removed a carriage siding from the station as it was a bit cluttered
-goods shed and station roof moved to the right to allow larger loading dock
-engine shed moved to the left to allow better operator view into station and loading dock
-added a bridge to disguise a sharp curve (but all landscape is tbc anyway)

Next step: finish laying the cork underlay which I have started, even though I have recently read that this is largely pointless with modern RTR locos. Still, it will help with forming the landscape around the track.

After that: learn how to paint track and start practicing on some old bits of Hornby... I don't own an airbrush so perhaps spray paints are an option.

Cheers!