Here's my generic answer to all questions like this (and there are a lot of them!):
If you're thinking of this as a money-making enterprise, I can't advise you, other than to say: do your research and don't invest more money than you can afford to lose.
But if you're thinking of doing this because you love the idea of a global, open, censorship-resistant financial network, and you love the Zcash community and you want to be a part of it and support it, then go ahead!
And maybe (or maybe not), you'll occasionally get a little reward in form of being the first to find a block and get the Miners' Reward for that block.
But if you're doing it for the latter reason — out of love — then don't count on making more money that way than you spend.