Hi Joanna,
We use a company called JLX, which has been excellent in helping with external lighting. You could try them:
Jake Kaiser | Production Manager
m 0400 739 682
p 07 3352 6811
e jakobk@jlx.com.au
a 5/747 Fairfield Rd Yeerongpilly QLD 4105
p PO Box 6247 Fairfield Gardens QLD 4103
w http://www.jlx.com.au
Kind regards,
Kate