don’t base a mining rig on a high end cpu like a i7 6700k, yes for equal hash it is pretty efficent, but for other coins its worthless. Best thing to do is to make a AMD mining rig around the very efficent RX series.
Equal hash is still profitable to mine today, but the price of zcash is going down very quickly and will continue to do so.
If you like the idea of mining, go for it, but don’t see the wild prices of zcash and expect to make a lot of money in the short term.