Setting up a simple test

I have a client interested in setting up a Squid proxy with around 100 
users going through the proxy.  My Squid version is 2.6.STABLE3 running 
on on SuSE Linux kernel 2.6.5-7.244-default.  This proxy server has an 
Intel Xeon 2.8GHz processor and 1GB Ram.  I have configured Squid for 
'cache_dir aufs /usr/local/squid/var/cache 1000 16 256' and 'cache_mem 
128 MB' and I am using proxy authentication 'auth_param basic program 
/usr/local/squid/libexec/pam_auth'.  I also have DansGuardian version 
2.8.0 for content filtering.  I have installed WebPolygraph 3.0.5 to a 
FreeBSD 6.2 release running on a Intel PIV 2.8GHz with 1GB Ram Dell 
workstation.  I have successfully tested SimplePG (with 100 robots), 
Test_Polypxy (with 10 robots) and PolyMix1 (with 10 robots). 

I'd like to create a realistic test of 100 users having Squid 
authenticating users to LDAP and accessing my DNS servers while caching 
content when possible while users randomly access random URLs.  Can I do 
this with one workstation and 100 robots?  What workload would you 
suggest I modify?  Is there any documentation on creating a customized 
workload outside of the Web Polygraph.org site?

Thanks,

Bart