Is this your first map? This looks incredibly well thought out and very well made. I hope you won't struggle with adjusting parts due to the level of detail. You clearly have a great eye for aesthetics and composition, as well as technical skill, which is a rare combo.
I haven't played your map, so this is all theory, but here's my concerns:
http://puu.sh/iIMRs/28eb4dfc20.jpg
This sightline is monstrous!
http://puu.sh/iIMTh/057e57ecd8.jpg
This one isn't great either, because it looks at the point room. If this area was more incidental or easily controlled by one team, it wouldn't matter so much (like the hallway between the two exits onto A in the main Gorge building).
http://puu.sh/iIMYk/a4a4dbbba5.jpg
This should be brighter. Looks like you probably missed this corner, is all, judging by the excellent lighting all over.
I think your red spawn is fine. It'd be cramped if the only way onto the point was from that ledge in front, but since it's more than that, it's probably OK. On the other hand, a bigger capture zone means it should probably take more than 3/4/5 seconds to cap, and I could see the interplay between teams around that feeling grindy. Or very fun. It's a fine line.
Your BLU spawn is probably also fine. The routes are scary, but the right side is relatively safe if predictable... still, you might want to widen some of those bridges or add a third bridge. Or cover one of them, or just put some junk down to help negate players getting bounced around by pyros/splash. I think that's a super interesting design choice though, and it's certainly unique; try to make it work as much as possible rather than compromising the vision too much, imo. The left side of BLU spawn looks scarier but it's easier to get to A so maybe it's fine!
You've got some rocks peeking through brushes in some spots but you're probably aware.
I really like the look of this and think it will play better than you expect. It feels inspired by Hella and HAARP; is it? Sorry to toot my own horn a bit there.
I know we don't know each other very well, but if you ever want help or opinions on this feel free to message me.