Hi mate ,I'd go for the 2350kv withe 150a speedy if you want the HB brushless ,Have you tried Ebay ,Should be able to get this for a good price ,with our Aussie Dollar getting stronger.
http://www.hobbycity.com/hobbycity/s...&ParentCat=192
I've got a Medusa 36-70-2000kv with a Mamba Max speedy in mine and running 4s lipo plenty of power and fast too.......