Hey, I think I can help a little bit.
first off, you need to change
upload_max_filesize = 1000M
post_max_size = 1000M
in your php settings. what you can do is to put a php.ini file in the root of your website. That way, all the descendant files of it will be affected.
Also, you will have to increase your live memory limit.
memory_limit = 512M
Now, other isssues comes into account with this plugin. For some reason, the upload process seams to never end with big files…
arttrust do you have a git account?