Number of Disc

How many disc are in play;
blue 45 white 6 blue 3 loaded in each bot (total 9)=60
Red 5 white 6 red 3 loaded in each bot (total 9)= 60
10 placed on the field

This gives a total of 130 Disc, is this correct?

Yes it is. And most of them start in the feeder stations.

3.1.1 MATCH Setup

This here gives the exact ruling on how the discs are distributed throughout the field.