I am a new to crypto-currency mining, but I am still willing to start mining in a month. I am planning to invest 50-100K EUR in mining 25-50 GPU mining rigs(6-7 x RX480 i guess) rigs, for Ehtereum/zCash/Monero etc.
I doubt if you can still purchase RX480 with 25-50rigs on that much number, imo, you must planned out how you will purchase those hardware, choose a decent suppliers
If electricity price is not your concern, then you have an advantage, you must calculate it to the least a gpu can get, if not, then dont do mining.
if you have cheap electricity in your area, nothing to worry about it, one good thing about nicehash is that payout is being paid into bitcoin.
for newbies like us nicehash is a friendly software that we can use but if we wanted to maximize our earnings we better needed to look for more info
that would help us to gain much better from our rigs.