Hi All,
A few remarks regarding grounding . . .
Since pure star grounding is impractical and counterproductive, most grounding schemes will use a combination of star and bus grounding. You want to divide the grounds into like types, such as small signal grounds, power handling grounds (power supply, speaker, etc.), grounds within two inverting stages (this applies more to pre and line amplifiers), and star ground those groups. Then run bus wire (Jones says 16ga minimum; I've always used 10ga for power amps and 12ga for small stuff) between the stars. Make the chassis ground point as close to the input stage as possible.
The safety ground should be separate--if you use a power entry module, it will be self-grounding as long as it can bite into bare metal--and should not be connected to the bus.