You can init Sublime (and open/edit files) from the command line relatively easily[1] and there's a plugin that will allow you run shell commands from within Sublime Text[2].

1: http://www.sublimetext.com/docs/2/osx_command_line.html 2: https://github.com/misfo/Shell-Turtlestein (or from Package Control)

EDIT: Ahh I see you edited, nevermind! But you can split the windows easily too!