ooh Joe you can simply just take off the items that are in the iron donation...
then you can just give me the next stuff after donating 4 pound extra

:
20.000 in game coins (instead of 50.000)
1x diamond tools + sword (instead of 2x)
full diamond armor
x64 brick (instead of 128)
x64 wood (instead of 128)
x64 stone (instead of 128)
x64 chests
x128 glass
x64 diamond
x1 spawner (pig)
x128 torches
x64 glowstone
x16 sticky piston
x16 piston
x64 red stone