To keep it simple, use the following guidelines
1. No rookies
2. 2 from the O, 2 from the D, and 1 STs
3. 5 Total (I know some teams have 6 IIRC, but we only had 5 last year)
FYI - last year's Cs were Hilton, Brissett, AV, Geathers, and Leonard. They were announced early/mid week prior to game 1.