Do you have any idea what kind of genetics you're working with?
Most of the pork leaving our farm today walks up the loading shoot weighing around 300# each. One would be almost more trouble than what it is worth.
But free was free, and one bag of corn plus scraps from 3 neighbors makes for fairly cheap feed. I do grind the corn and make her hot water corn cakes that she loves.
On the positive side, I move her cage around the yard and she's wiping out grubs in the yard and leaving well plowed and fertilized little garden plots. ;)
/johnny