I am also in QLD
where do you get most of your kit from?
A decoder chip will give you more outputs. For example, the 74LS138 will set eight output lines using only three output pins.
But they can't be latched
There are latch chips that can be used to hold the desired state. I don't have a chip number in mind
There are not many pin outs on the board (14 is it?) - http://www.gammon.com.au/forum/?id=11473
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