I am in the process of booking some flights as follows

ADL-SYD-LAX-YVR-LAX-SYD-ADL

I have asked for them to be booked in V class so I can request an upgrade to business. I just wanted to see how many seats are still available in Business because I assumed if there were still seats available in Business the chance of an upgrade would be much better?

I am obviously mainly interested in the SYD-LAX legs.

I checked the seating availability with http://www.flyaow.com/classcwt.htm

the thing I don't understand is the total number of seats available as shown are far less then the total number of seats on the flight, can anybody shed some light on this ?? (if you understand my question)

I want to fly out on the 10/11/12 of March and return on the 28/29 of march.

Also just on aside I have added up a total of 150 sc for the flight is this correct?