Look at the WortdEdit mod.
You can //pos1 (NW corner) //pos2 (SW corner) //expand 100 100 u (//copy 100 blocks above and below where you //pos1 and //pos2ed), //copy (note where you //copy, that is where it will //paste in relation to you later) //schematic save name .
Go anywhere in the world and schematic load name, and //paste. you'll need a little patience, it can take what seems like forever.
I know WE will work for 1.12.2 and below. I'm not certain there is a 1.13 or 1.14.
Need more help, PM me.