Are you looking at using coach at 45K each way or mile savers at 22.5 each way? We were able to grab FC mile saver tickets for 37.5 each way last May when there were no economy mile savers (only 45K each)..
As far as pricing on "purchase".....we have been going to Hawaii for the last 4 years in the early summer. I notice that when I start to "price out" tickets they always start about $1000 when I look 6 months out. Then as we get closer to our trip the prices keep coming down. I have yet to see the prices go up and it seems to be that the best prices can be found as long as you go in May and are out of there before Memorial Day weekend...
So I would say the prices may come down in the next 2-3 months....so you may only have to pay $600ish for that coach ticket....