Isn't it about 150TH, not ~5-7?
Nope. Labrat said that 55% of the BitFury gear is up and running already. The current total hashrate is only 17TH, half of which is BFL gear. So that must mean that about 5-7TH of Bitfury gear is left to install.
I think Labrat bought 100 Monarchs.
I think you are taking statements too literally and not thinking creatively. Could be wrong though. I suspect LR has exactly 17.7 TH pointed at CEX.io to create that ticker. The rest is pointed elsewhere. Note the readout we see matches the "17.7 TH contracted" bit in LR's signature.
I think originally when all this started, LR received a minirig, some singles, and maybe some other stuff for a total of about 1 - 1.5 TH, then we received a bunch of bitfury equipment in Dec I think that brought us up to 23 and change TH, which is where we have "been" since. That is the hardware (minus 25%) that has been pointed at CEX.io to generate that ticker we see on LRM's site.
Unless LR got royally screwed over, 150TH or more should have been inbound from bitfury, and half of it is online somewhere judging by comments from today.
ETA: The monarchs were ordered at the same time as the first batch of bitfury gear and iirc, the order was implied as being around $40-60k... so 10-15 originally perhaps? My memory sucks, and I'm particularly lazy today, someone please help with the numbers.