Vault Tower of Eschaton

Hey, this is my first real map so please don't expect too much. This map is quite strange and unique, has some issues but I'd love to know what times can be achived as I am not a very good driver. Also, because it took a good amount of time to make, I think it's a must to share. There's a problem with the intro as the initiate view isn't set right and I have no clue how to fix this.
You can watch a replay of this track here:
https://www.youtube.com/watch?v=iUvYwj6KVbU
Thanks for your support!