That's a really talented team you have there me.
Without looking at what you've been running, my depth chart would either be this.
PG: Bruce Richmond | Nick Webber | Thomas Read
SG: Larry Montero | Nick Webber | Thomas Read
SF: Casey Bark | Ronald Hanks | David Leuenthal
PF: Eddie Fosdick | Neal Elizondo | John Brooks
C: Alfred Thresher | Edward Huges | Eddie Fosdick
Or this.
PG: Bruce Richmond | Nick Webber | Thomas Read
SG: Larry Montero | Nick Webber | Thomas Read
SF: Ronald Hanks | Neal Elizondo | David Leuenthal
PF: Eddie Fosdick | Casey Bark | John Brooks
C: Alfred Thresher | Edward Huges | Eddie Fosdick
Your problem is that your best four player are guards. You really need a better do-it-all wing and a more traditional rebounding/rim-protecting big to hold it down in the paint. You'd probably be better-suited playing the press but I think your team still has huge potential playing man-to-man with a 74 average defensive rating. Gl the rest of the way!