if i'm honest I'd be really surprised if you get a mid level position.

Storyboards/treatments come in from the ad agencies, we rarely do them. We do concept art for things, but this is all done by a dedicated concept artist. So i think you are mistaken about the storyboard thing. Its generally and agency and client thing. We might advise them, but thats about it.
If you want to work on set then you need to be a supervisor, and this just comes with experience. just saying green screen isnt what is required. you need to advise people on the type of cameras, how to shoot with them for specific shots. you need to know what is and is not possible in post within the schedule of the job. i'd say there is no place for a consultant who doesn't do the cg him/herself.

you probably don't want to hear this, but i wouldn't say your work is top quality either. The easiest way to get a job as a generalist in commercials seems to be showing you can do everything a bit and also matchmove and have some knowledge of 2D. And that is exactly what escape teach. So if you think you can do that then just make a reel and save some money. you don't need to go to escape to use them as a recruitment place. also, have you tried their free tutorials? i think they have a couple of lighting ones.
The one thing i would say against escape is that you can spot and escape studios showreel a mile off. There seems to be a formula now!
have a look at some of these. I recently entered a showreel in their cgwhiz comp.
https://vimeo.com/escapestudioscgwhiz
some of them are amateur reels.