I don't believe the forum special price is still in effect but there is nothing stopping you from ordering that exact configuration.
There are three online storefronts that have competitive pricing:
Boots Online http://www.bootsonline.com/
Aussie BushHats http://www.aussiebushhats.com.au
I ordered with Nungar two years ago and have nothing bad to say. Nungar can take custom MTO orders.
I most recently ordered with Assue Bush Hats and their customer service is very friendly and responsive. They also take custom MTO orders
Never ordered with Boots Online but others have reported good experiences and I hear they can take custom MTO orders. So it looks like you can't go wrong.
Also, I visit the NYC RM Williams store once in a while since I live in the area and they are great. They have friendly staff who let you try on boots, no pressure to buy, and are pretty knowledgeable about the different leathers and lasts. The guy who helped me was actually wearing the forum special and it was nice to see in person what worn in veal looks like, and what a screwed sole looks like. I pick up my regular supply of polish there however their boots do end up costing 100+ usd more for the particular boot I ordered than purchasing online (even after shipping & duties). That is likely to change based on AUD USD exchange rate.. right now they are about even. I do feel I owe it to them to eventually impulse buy a boot in their store due to their friendly salespeople and the fact that you can try on different lasts and look at leather swatches.
EDIT: more before you buy the forum special - I would take the Macquarie 555 last into consideration for sleekness as well. Whichever you choose, whiskey colored yearling looks to be a beautiful leather and will save you a load of money over the veal. The screwed sole vs welted did not add any cost to a boot order when I checked and as an example you could pay $270 AUD for a screwed sole Macquarie in whiskey http://www.aussiebushhats.com.au/cat...roducts_id=285
. I assume the Turnout with a B529 last will have the same situation. Alas, in spite of this I bit the bullet and ordered mine in deliciously cruel & creamy veal