That depends on a lot of things....
1. Do you have enough land for them? Goats need at least one acre for every 4 goats...meaning no less than 2 acres for the 6 goats you want.
2. Is there already a market for them where you live? If not, it's really not worth it. If there is a market, read on....
3. What is the main product you want to produce? Boers are, of course, known for their meat, but you can also use them for milk, fiber, and skin.
4. Do you have the money to raise them? Whether raising goats as pets or for food, proper - yearly - vetting is needed. Goats are known for eating "everything"...but that doesn't mean everything is GOOD *for* them. Along with grazing, to keep them healthy and fed properly, they often need a supplemental food which varies from $20 to $50 per bag....and with 6 goats, they'll go through roughly 1 bag every other day. NO ONE is going to want to buy a sickly or malnourished goat...no matter what they intend to use it for. A sickly goat would make a horrible pet as well as possible sick people from eating the meat. A malnourished goat means little to no meat.
5. Are the goats related? Just as with any other animal breed, too much inbreeding can lead to abnormalities and deformed babies...which people also won't want to buy. If 2 of your cousin's goats started as "mom" and "dad"...and the other 4 are siblings...you're taking a HUGE risk as far as future babies are concerned. If none of the goats are related, you may also wish to consider selling some of the females as well...mostly for their milk rather than meat. Humans tolerate goat's milk better than cow's milk, it's healthier for us, though it is sometimes harder to get, especially if the goats aren't used to human interaction.
Ultimately, only you can make the decision, but consider these factors before taking on the challenge of raising and farming them.