Sstrhsrtj

I'm using the document class scrlttr2 to make a cover letter, but since it's a business letter the date needs to be left-justified and above the address. By using the work-around here I was able to left-justify it, but I can't figure out how to change the position of the date and the justification is matched up the letter's body and not the address section. Since everything else is exactly where I want it to be I would like to not switch to another class, and I was hoping that someone here could help me out.

Here's my sample code:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

% Short Stylish Cover Letter

% LaTeX Template

% Version 1.0 (28/5/13)

%

% This template has been downloaded from:

% http://www.LaTeXTemplates.com

%

% Original author:

% Stefano (http://stefano.italians.nl/archives/63)

%

% License:

% CC BY-NC-SA 3.0 (http://creativecommons.org/licenses/by-nc-sa/3.0/)

%

% IMPORTANT: THIS TEMPLATE NEEDS TO BE COMPILED WITH XeLaTeX

%

% The two fonts used in this template: Adobe Garamond Pro and Gill Sans

% do not come with Windows by default. You will need to download them in

% order to get an output as in the preview PDF. Otherwise, change those 

% fonts to fonts that do come with Windows or comment out the lines to use 

% the default font.

%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



%--------------------------------------------------------------------------------------     --

%   PACKAGES AND OTHER DOCUMENT CONFIGURATIONS

%--------------------------------------------------------------------------------------   --



documentclass{scrlttr2}



usepackage{fontspec} % Allows font customization

usepackage{marvosym} % Allows the use of symbols

usepackage[english]{babel} % Required to compile in Windows

usepackage{graphicx}





setlengthparindent{0pt} % Removes all indentation from paragraphs



defaultfontfeatures{Mapping=tex-text}

%setmainfont {Adobe Garamond Pro} % Main document font

setsansfont {Cambria} % Used in the from address line above the to address



renewcommand{normalsize}{fontsize{11.5}{12}selectfont} % Sets the font size and    leading

setkomavar{date}{flushleftvspace{-baselineskip}todaypar}



%--------------------------------------------------------------------------------------  --

%  HEADER SECTION

%----------------------------------------------------------------------------------------



firsthead{

centering

{addfontfeature{LetterSpace=20.0}fontsize{36}{36}selectfontscshape Peter Maguire}\   [5mm]

fontsize{21}{21}selectfontscshape My Job \ My Institution } % Your current job   title





begin{document}



%----------------------------------------------------------------------------------------

% COVER LETTER CONTENTS

%--------------------------------------------------------------------------------------  --



begin{letter}{ % Address of the company you are applying to

Biotech Company \

123 Street Street \

Washington, CA 12345 

}





opening{Biotech Company HR Manager,}



begin{sloppypar}

Main section here 

\

end{sloppypar}



Sincerely, \

Peter Maguire



%--------------------------------------------------------------------------------------   --



end{letter}

end{document}

This is what the output looks like:

And this roughly what I want it to look like:

Anyone more skilled in this stuff have any ideas?

Sometimes you may have to cheat a little...

Below I set the date as part of the address, leaving the date empty:

documentclass{scrlttr2}



%usepackage{fontspec} % Allows font customization

%usepackage{marvosym} % Allows the use of symbols

usepackage[english]{babel} % Required to compile in Windows

usepackage{graphicx}





setlengthparindent{0pt} % Removes all indentation from paragraphs



%defaultfontfeatures{Mapping=tex-text}

%setmainfont {Adobe Garamond Pro} % Main document font

%setsansfont {Cambria} % Used in the from address line above the to address



renewcommand{normalsize}{fontsize{11.5}{12}selectfont} % Sets the font size and    leading

%setkomavar{date}{flushleftvspace{-baselineskip}todaypar}

setkomavar{date}{vspace*{-baselineskip}}



%--------------------------------------------------------------------------------------  --

%  HEADER SECTION

%----------------------------------------------------------------------------------------



setkomavar{firsthead}{

    centering

    {%addfontfeature{LetterSpace=20.0}

        fontsize{36}{36}selectfontscshape Peter Maguire}\[5mm]

    fontsize{21}{21}selectfontscshape My Job \ My Institution } % Your current job   title





begin{document}



    %----------------------------------------------------------------------------------------

    % COVER LETTER CONTENTS

    %--------------------------------------------------------------------------------------  --



    begin{letter}{ % Address of the company you are applying to

            today par vspace*{2baselineskip}

            Biotech Company \

            123 Street Street \

            Washington, CA 12345 

        }





        opening{Biotech Company HR Manager,}



        begin{sloppypar}

            Main section here \

        end{sloppypar}



        Sincerely, \

        Peter Maguire



        %--------------------------------------------------------------------------------------   --



    end{letter}

end{document}

How come I cannot get rid of the address, right below the date.
It complains there is no line to end here!