Although intending to bull through this build solely from reference pictures - that is, without any decent plans - we certainly won't pass up this opportunity now to use some - straight from the Australian National Archives - which I recently found at the Finding Sydney Foundation website.
The following is my doctored version of the above plans; rectified and with rigging and railings largely removed, making for much clearer interpretation, IMHO:
Click for Full-Resolution [LARGE!] Plans
If you find any mistakes which I made - not introduced errors, as I didn't add anything, but incomplete cleanup (as I have already some few myself) - please let me know and I will upload a corrected version(s).
Oh, and you can thank me later!