If the content you are uploading is too big, it will likely be rejected from quadro, even if it appears to be uploading. If the content is still big but still less than 13MB, chances are it still won't upload properly and you will have wasted your time.
Give it a try and create your node without uploading your content, then edit it to upload. At least you won't have to rewrite all the node info each time.
Also, welcome back! It's been a long time since we last saw you :D