As I understand envion plans to pay about $1 per $100 per week. The plan takes ether price of $400. dividens will be in ether. So that 0.01 ether per 100 env.
That is 0.52 ether per 100 env per year.
Even if we deduct the 25% of development that is 0,39 ether per year
Right now ehter is about 700$, that is 1 ether = 700 env, that gives at least 2,73 ether per year
the safety is more than 50% (extra cost, something rong) simply to be as with ether with no investment

Could someone say something against it? What are the main risks:
difficulty to buy a huge amount of miner's equipment. But envion could reserve it in advance/

Specialists in ligistics and hardware? Envion could hire them

Cooling? The could use refrigerators