CMD World Setup One Command

Just a small command I use whenever I create a world for making command block contraptions :p
Also, I'm using say commands instead of tellraw because at the moment tellraw is a bit iffy :/

/summon FallingSand ~ ~1 ~ {Block:redstone_block,Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:fill ~ ~0 ~1 ~ ~-15 ~1 redstone_block},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:setblock ~ ~3 ~1 stone},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:setblock ~ ~4 ~ command_block 0 replace {Command:fill ~ ~2 ~ ~ ~-19 ~1 air}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"say By http://www.youtube.com/user/MrIlliteracy"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"say weather clear 1000000"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"say time set 6000"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"say  doMobSpawning false"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"say doDaylightCycle false"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"say keepInventory true"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"say commandBlockOutput false"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"gamerule doMobSpawning false"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"weather clear 1000000"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"time set 6000"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"gamerule doDaylightCycle false"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"gamerule keepInventory true"},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:"gamerule commandBlockOutput false"},Time:1,Riding:{id:FallingSand,Block:stone,Time:1}}}}}}}}}}}}}}}}}}