Good song.
To be a bit more specific:
The intro is freaking good. The kinda low fi cello ish sound is really haunting and the strings and sound effects everything that you have in the first 20 seconds just really make for an awesome atmosphere. Then the acoustic drums that come in are kinda okay but as I've told you I don't think they fit TOO well in the synthetic nebula of sounds you created so to speak. It's sounds a bit like what it looks like when you install electric lamps in churches, the context makes the lamps kinda awkward. Anyway moving on, the bellthing does sound good here. Yeah I already told you what I think about the flutes too. But they do sound like they're mixed a bit better here so they don't stand out as much. The guitar sounds a bit much synthetic around this part.
The transition to 1:01 feels real classy, the bassline change and big pad chord is very reminiscent of mid- to late Pink Floyd. And the guitar parts here are just great, they might as well be real. The whole atmospheric part from 1:01 to 1:46 is fantastic, I love when you can kinda sit back and mentally throw yourself into like a soft mattress of just sounds and sounds. It's great. I try to have parts like that in most of my songs. A lot of panning that spreads out the sounds and creates a huge stereo width really helps too. I think you should some high mids to make it more pleasant though.
Okay yeah so after that it kinda keeps doing what it was doing earlier, albeit with more intensity and a few added and changed up parts and so on. To be honest I don't really enjoy that part too much, mostly because of the flute probably but it's also because the time signature and rhythms are a bit jumpy and awkward. Not that you should really change that though. At 2:03 things start getting a bit more interesting and at 2:13 you really do some great stuff, the parts from here on out are very prog rocky.
2:24 to 2:45 is like so good man.
After that the guitars are aaaaalmost a bit realistic but not really. And the harmonic lines at 3:00 are neatt. Majestic. Reminded me of Animusic's Harmonic Voltage. The frantic drum and guitar and organ synth stuff after that is just like whoa that was awesome. You're actually really really good. Fuckin fantastic transition to the new calmness at 3:36. That part is great! But I wish you hadn't introduced the flute again so soon because it kinda makes me go "oh, this part again". I imagine it would feel a lot more like a big journey if you had just not included it at that moment, because just after that (4:10) you do a new and entirely different part... you don't really have to restate the main theme that many times. And it wouldn't hurt to have some space in the mix by leaving it out either.
Woah neat drumming at 4.52. And at 5:12. And see there you introduce the main theme again so you didn't really need it last time.
Brilliant ending.
It's just 6 minutes but it feels a lot longer. Which is due to it being such a varied song so it's good.
The production is okay but also generally a bit muddy. It lacks that certain polish - each instrument doesn't really shine through the mix like it should. And the bass isn't very clear at all (at times it sounds like you panned it off center? That's not good). I suspect you might have used the reverb a bit too indiscriminately. That's the main thing that hampers my enjoyment of this song (well except maybe the flute lol but that's just about my personal taste).