Thankyou all, even more for me to think about.
I'm looking for some silky oak but it's difficult to source. I can get my hands on any of these as floor boards: http://www.gardetimber.com.au/index.php?option=com_content&task=view&id=27&Itemid=31
and I'm leaning towards the rose gum and tassie oak.
I will be using a thicknesser to cut it so I'll try for 2.5-3mm thickness all the way around.
The workshop has a verticle drum sander (not sure thats the right name for it) and a belt sander too, so shaping from one peice should not be too problematic. I don't mind getting in there with a spoke shaver either if need be, though I have yet to try using one. If need be I'll break out the trusty dremmel.
It's all very new and it's gone fom being a very impossible task (I'm in that generation where girls we not allowed in the wood work class in school, we had to do home ec)to being one thats quite exciting thanks to this wonderful forum and a few other online recources I've stumbled across.
I wonder if any of you would mind looking over my plans to see if I've got them about right?