Applescripting out that VIM error

I have a frequent problem where my VIM window is too large for my macbook screen but it fits on my external monitor, so when I unplug the external the VIM file bar gets stuck behind the Mac OS menu bar. It's a huge pain to fix this normally, but I wrote/stole an applescript to fix the problem:

try
    tell application "Vim"
        activate
    end tell
    tell application "System Events"
        tell process "Vim"
            set size of the first window to {1000, 200}
            set position of the first window to {50, 50}
        end tell
    end tell
end try