Designing antibody panels that work sucessfully with your particular experiment can be one of the more difficult challenges in using flow cytometry.
The simplest approach is to plagerize: to use an existing panel which works, and modify it for your needs. The best source for this may be one of your lsb mates.
Cytometry Part A publiishes peer-reviewed Optimized Multicolor Immunofluorescence Panels (OMIP) that are available here. Currently there are over 30 of them, and they can be a very informative starting point for your panel.
If you are going to design one yourself, a helpful online tool is FluoroFinder, available here. This site has all our instrument configurations, and is a good aid infinding out what conjugations are available commercially.