From a pure investment standpoint, males are unless eaters until you have something to breed them to. also I would suggest you do as much research as possible, as you would find out, it doesn't matter if the pair is related or not.
also i would suggest reading over the threads that pretty much show 99% of people do not make profit doing this, its a poor thing to invest in, you pretty much have to see it as a hobby your sinking money into, or your bound for failure. Its not to say some people don't make a living doing it, but for the other 99% of us.... not a chance.