I do enjoy reading your treatments of the popular New Atheist arguments, but there are many staunch atheists that will tell you they agree that some of the arguments made by the "Four Horsemen" are easy pickin's for philosophical logicians. They are also keen on pointing out the existence of much more cogent arguments made by some supposed intellectual powerhouses that are not so easily dealt with.
I've seen "Voices of Disbelief: Why We Are Atheists", that was put together and edited by your fellow Australians, Russell Blackford and Udo Schüklenk, referenced several times as containing some of those more difficult to respond to arguments.
I found an online PDF of the book and I am in the middle of reading it. I thought you might want to give it a look if you get a little time in the future.
Here's a link to the PDF:http://www.thedivineconspiracy.org/Z5244C.pdf