In the end is was just too much work for not much return, lots of buildings without much operation. However was a learning experience, plus my carpentry skills have improved much since then.
If I happen to retire with a 12mtr by 12mtr room for building a layout, I might again contemplate Port Augusta, as a layout. but I have at least three other layouts in the pipe line after Alice Springs and Port Augusta isn't one of them.
Alice Springs update.
The "Gap" board has been positioned and mapped out, the east end of the yard has been mapped out and the position of the turntable has been finalised.
All the additional legs have been cut up in kit form and I have started construction of the new legs, for the rest of the layout.
Probably by the end of the week I will be just waiting on the track!