Is there anyway I can edit/remove large areas of blocks? anywhere from 1,000 to 10,000 blocks. I would not be against using a third party software like a WorldEdit for example.
Do it on the pc and port the world over. Pocketmine will most likely crash if you put that type of presure on it.
You could try to find a way which does not have some sort of memory leak (*cough* blockcache *cough*) and then wait an hour or so. simply spamming setBlock will exhaust memory because of https://github.com/pmmp/PocketMine-MP/blob/master/src/pocketmine/level/Level.php#L1423 and other stuff
No, Minecraft for PC or "Minecraft Java Edition". The one that works on Windows Mac and Linux. You can take maps from it and port them to be used on PocketMine.
well if what you are saying is true I will try to generate a brand new map inside MCEDIT, im going to use it to generate a woodcutting world so it has to be relatively flat
You could generate a flat world with layer presets of your choice. you want bottom layer to be bedrock and 100 blocks above it all wood etc