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.

http://frc-manual.usfirst.org/viewItem/3

3.1.1 MATCH Setup

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