what ridiculous prices you're quoting there mate.
$10000 to supply/fit front & rear wide guards & full kit????? your spray painter/body kit fitter must be loving your business.
$6000 to fit a kit, flare the guards and line up????? once again, you are making them very rich quickly!
$5000 for wheels?????
you don't necessarily have to have the best & most expensive wheels, theres always the option of getting excellent condition second hand wheels.
ie: http://www.j-imports.com.au/uWheels.htm
all 18" wheels are under $3800 for decent size & offset.
general cost to fit widebody rear guards (fibreglass panels) are around $700 to blend in + painting around $300 per side.
metal is different so it will be a bit more time consuming but i dont see them charging more then $1000 to fit so prob $1600 to fit & paint.