Earlybirds are out now and quite impressive for the April period. I went to Jetset in my local town with a printout from Webjet, and had also been browsing bestflights website. Jetset sponsors my fire brigade annual Art Show, and I was keen to ask for their business for as close to a web price as possible. We got flights for January at a pretty good price (considering I had missed earlybirds) flying Emirates for 2 adults and a 19month old (he will be) - $2165 each and $198 for DS. More than I've ever paid before, but I've never travelled there in Jan, always left in quieter periods.
Actually, that's not including the flight to Ireland, but that's not going to cost much.
Good luck!