Hello chimpazilla!
Chimpazilla makes me think of a cross between chimpanzees and Godzilla...which would about be King Kong I guess. Anyways, with such a large name, you've got such a nice, pleasant to listen to song here! I always like to just comment on what I hear as I listen through, but more general things will sneak in too and at the end.
I like the piano and pads at the beginning. It works well for the ambiance of it all. The sounds are pretty nice. I think particularly for the beginning, some of the higher notes (wrapped in chords) seem a little "harsh," which might be a matter of playing around with the EQ for that instrument. It's not bad at all, and the instrumentation is nice, just those higher notes stick out a bit. For more instrument-related commentary, around :25, the guitar comes in. It sounds pretty nice, but, I'd love for more reverb to it, maybe even the slightest, slightest touch of echo.
Then, the drums. You have more of a "techno-ish" drum set being used. I think that the song might work better with a brush set or jazz set. I really think those brush sounds would work great here and not be too heavy of a set at all for a song like this, and you'd get a nice array of sounds. I suggest this too because some of the drumming here is a little heavy on the snares, like around :47 when it's basically a march. I just think having a fuller set could open more sonic capabilities to the song, such as cymbals, a truer snare, and even some light toms. The brush sounds would also work to blend everything in. You'd also get a snare "click" that would work well in the song. (Where you hold the stick on the snare and tap it on the side of the drum. I don't know the technical term!)
Enough about the samples for now though. All the other ones sound pretty good. I like the vocals too, especially around 1:22.
Starting around 2:00 until about 2:52, I'd love for this part to have some more "soloing" things going on in it. You feature the guitar after this (which is really awesome, and I'll get to in a second), but through this section, I think instead of introducing those lower strings and even the bell part, you could have some cool electric piano soloing going on. Something not so intense as the guitar part later, but something to whet the appetite, even just some rhythmic moving chords (think like what a jazz piano might do). I think it would lead into the guitar well at 2:52. Speaking of which, this section is a pretty awesome climax to the song with the choir and the guitar and everything going. Really good job. I'd keep this part as the climax of the song. It'd make for a great build-up starting from 2:00.
I think that the second half could certainly help make this original enough. To aid this along, I'd concentrate on making sure that the first half is very polished. Make it an aural experience, maybe have sweeping pads doing stereo things (panning right to left), just to make sure there is enough sonic activity going on. The music is all pretty dang good to me and this is just pleasant to listen to. If there is enough meat to the first half, and you have a little more fun with the second half (maybe taking some of my suggestions into consideration), I think this could certainly be something that would end up on the site.
Thank you for sharing! Be sure to post up any updates and things. I'd love to hear how this comes along! Hope that I was helpful; no one had commented yet and I wanted to make sure you got some thorough feedback. I'll gladly check out any changes that you make to it!