I like it pretty much all after 1:20ish
Although I suppose, the buildup is necessary.
I would suggest, somewhere, putting in "it's the final countdown" somewhere, even if it's just instrumental.
I'm thinking somewhere about 2:45 slowing it down, pulling out the instruments until it's just the main melody going, having "it's the final countdown" tune play, at which point the whole song should push back into full gear.
Also, please get rid of those fades used at, I believe, exactly 3:00, and 4:30... maybe more of them... but they are a little disorienting.
As for the ending, it was good, I suppose... but I think there is a reason that they had the singer call out "it's the final countdown".
The music by itself gets quite repetitive.
Either way, pretty great as it is right now, but I would prefer it, well, with those things that I've mentioned.