I'm not actually sure whether the recommended ergonomics matter a whole lot but it seems that your keyboard and screen heights while standing are not as they should be. According to most people, a standing desk setup should look something like this: https://img.skitch.com/20120619-qqtq8nf6agxxk29cg9bsih8biq.p...

I'd recommend, in this case, just making sure your laptop is at the right height, and getting a separate keyboard and mouse for lower down. Again, I'm not sure whether this actually makes a big difference, and if you're liking what you're doing now and it's not hurting I can't imagine it's terrible, but just some advice.