Cool. Spawntown can easily provide the 384 coal for the project if you want, as we have 17,610 coal and there's no point in wasting time chopping trees to get charcoal then. Also, only 48 logs should be needed for the sticks, as 1 stick and 1 coal makes 4 torches, so 1 log makes 8 sticks or 32 torches, and 48 logs make 1536 torches.
The farms at Border Hill also have a lot of excess seeds that you can take some from, but not 20k.
For the side walls, the only material we have anywhere near 50k of is cobblestone, which we have 41k of in collective storages plus a lot in public storages too. I can provide some cobblestone if you want to use that.
Building it all the way up to y = 256 sounds a bit overkill imo, but if you want to, I won't stop you.