Surely they can find some English speakers, they don't necessarily have to be in the US, just speak it at least occasionally. It seems to me though, if you offer a free apartment with the added cameras some US couples would do it. Only need a few and the turn over can be high.
VHTV's latency, at least for me 15-20 seconds, really long time between what I'm seeing on screen and what is being broadcast. So servers located on this side of the planet would be welcome.