The best advice I can offer you, is to by the cue balance program from Kelly Peterson,
Web
http://www.mvpcues.com
Email
kelly@mvpcues.com
Phone ++1-318-419-5392
Copyright <2012>, <Kelly Peterson>
For what it does his program is sold too cheaply . Kelly is a great guy to deal with and has quite a few video tutorials on how to use his cue balance program. It is customisable to the densities of the materials involved. You can choose generic densities or you can weigh and measure and then calculate your specific wood densities to get the most accurate results possible. You can change various dimensions until you arrive at the required results you want, even change types of collars and pins,and pin materials.
It is a great tool,takes some learning though, but is really well worth the effort.
Neil