It's a good project if you can cut on the cost of production.
If you have a high breed that takes shorter time to mature than the local ones.
A reliable veterinary who guides you thru.
The main challenge to is the quality of feeds, to get the value of your money and also to enhance quick growth.
Market isn't a big challenge since you learn from other farmers how they sell or you can take them to the slaughter house yourself and sell according to the market price.
When I was rearing them, I preferred to connect directly to the slaughter house and avoid brokers.