advice on spares and springs.

[jampat2004]

hi all have recently purchased an fs2 which im very happy with and done a couple of indoor meets.
just need advice on what spares i should buy for the outdoor season just so i dont come unstuck,just necssary parts cant afford to buy to many.
also would like to know what springs i will also need to get as i only have the kit yellow ones.
will be racing at various tracks with different surfaces over the outdoor period.
many thanks