weblogic.xml: jsp-descriptor element (working-dir)

Hi all,

In order to define correct deployment directory, we want to modify the weblogic.xml with jsp-descriptor as followed (e.g.):

<?xml version="1.0" encoding="ISO-8859-1"?>
<weblogic-web-app xmlns="http://www.bea.com/ns/weblogic/90">
  <security-role-assignment>
    <role-name>PrivilegedUser</role-name>
    <principal-name>Administrators</principal-name>
  </security-role-assignment>
  <jsp-descriptor>
 <page-check-seconds>60</page-check-seconds>
    <precompile>false</precompile>
    <precompile-continue>false</precompile-continue>
    <keepgenerated>true</keepgenerated>
    <verbose>true</verbose>
    <working-dir>D:\Oracle\Middleware</working-dir>
  </jsp-descriptor>

  <charset-params>
    <input-charset>
        <resource-path>/*</resource-path>
        <java-charset-name>UTF-8</java-charset-name>
    </input-charset>
  </charset-params>
</weblogic-web-app>

My questions:

1- Is the solution (using weblogic.xml and modify working-dir) correct? 

2- What is the best approach:

a- preparing  <working-dir>D:\Oracle\Middleware</working-dir>