What type of setup???

Would i need 2 pull in 5 pounds a month after my first harvest???

You'd be aiming for 1g per W of lighting per harvest. You'd be looking to use at 1 square foot per 50W of lighting. You can do the math from there (easy to calculate how much lighting and space you need). Without more info anything else is a guess (tbh even those numbers are just a rough guide and might be way off depending on your circumstances).