Is there an optimal height to place a sky iron farm?

>Bedrock
>Place scaffoldings and dirt until reach level 150
>Place some blocks to start a base
>Ride in happy ghast up and down to build everything.
>Transport couple villagers with a boat, drop food.
>Place in the floor dripstone, hoppers and chests.

If everything works as intended, the golem should spawn, get pushed and fall from 153-154 to the dripstones at 48. Should take 200 damage upon hitting the dripstones, causing instant death.

Would work or what I'm missing here?