The season ticket should be £199.
If you want to do the early buyers discount make it £30, so the season ticket comes out at £169.

Match day £19. I know that means you'll need a bucket load of £1 coins as float, but it keeps it below the psycological £20 mark.

And finally, everyone under 17 should be free, always.

Then we get onto marketing, and cue GF...

it seems to me those that want allocated seats often sit in the central blocks of the West Stand. Why not make a few blocks in the west allocated, and everything else unallocated. If you sit in an allocated seat usually but bring mates along, you could sit elsewhere in the west with them, or try the east stand.