The big thing is you're kinda selling low on Miller at the moment, your trade partners aren't going to be giving you fair market value for a player like Miller with his current stats... and the guys you plan on including (Purcell and Conacher), you're kinda selling high at the moment too, so I don't think you're going to land a top-tiered guy like Rinne/Smith/Quick with what you're offering.
One thing you have to keep in mind is that Miller is a great 2nd half goalie, as long as you can ride it out.
He posted 18-6-5, 2.12 and .930 numbers from Feb onwards last season.
13-8-4, 2.44 and .921 numbers from Feb onwards in 2010-11.
So if you can hold out to the 2nd half, he could be a very solid contributor down the track.
But by all means toss a few lines out there and see what you can catch in return, if you happen to get Rinne/Smith/Quick back in return then go for it.
Dobber Expert Pool Champion 2011-12