After working on this for a long time (and then getting busy and not working on it for a while), I have finally finished Rosehill.
Download this and place into your Starters Order 6 folder.
To make it work perfectly, after uploading, open your showcase file for Australia (folder 3) and change the course tag for the following for Rosehill races:
-Races @ 8f, 9.5f, 10f - Rosehill:cc_flatTurf2
-Races @ 5f, 5.5f, 6f - Rosehill:cc_flatTurf3
All others can stay at Rosehill:cc_flatTurf1
Download:
http://www.mediafire.com/download/qk7878a3f6c3odj/Rosehill_Realistic.zip