Good work so far!
Is it just me but is this project screaming oldskool at me?!
The way you did the window cut and the age of the case gives it an oldskool flavour imo, and I reckon you could play on that idea!!
As for the front panel, hmmm? maybe not cut a round hole but cut a rectangular piece out ( vertically ) and have some modders mesh/grill of sorts mounted in there - I think with the curve of the front panel and following that shape it could look pretty pimpin'. maybe have it gently backlit??