How can I make the newsletter editing space larger?

OK, I love editing and designing. But guess what? I'm hating it in this newsletter, and that's no good. The tiny window for creating the newsletter content makes it impossible to see what I'm doing. How can I make the editing space larger?
Also, is there a way to send the newsletters like autoresponders, in sequence, so that when new members come in they receive it in the same order? Thanks, MM