I don't see a scam. The numbers they give for ROI are possible, but improbable.However they have installed new cabling for the power demand of the miners already, ordered 500 S9 Miners (only 10% of the investment for miners, like the majority of token holders voted) and are gonna get the new Bitmain model as soon as it comes out. They might not be the most experienced guys in this business but they seem legit.
The level of humidity would only be a problem if your devices get cold and condense the water, which will never happen if they are on 100% of the time, which is the case in a mining facility. I run back in 2013 around 7 GPUs on 2 computers on my balcony during 7months nov 2013 through may 2014 and they were outside. It didn't matter how cold or how much humidity, the flow of air and the higher temperature of the devices in relation to the environment avoids any kind of condensation problems that could damage the circuits. Actually high levels of humidity would only help dissipate heat better since humid air is more difficult to change its temperature (specific heat).
I keep buying tokens at 0,32$-0,34$ since weeks, enjoying the low prices. Once we get out of the bear market and the miners are running, this could be a very good business. Calling it "a scam" is dumb and unfounded. Bitconnect was a scam. This is just another young project with a sales pitch that was improbable, but if you do your own calculation, you know that you can get your ROI in a longer period of time, which for me is perfectly fine, specially if I got the tokens at 1/3 price of the ICO.