Dreamo doesn't lag. Plus I don't get why would a non american citizen cause lag in the room. And even if he did, wouldn't all players in the room be lagging? So it's the same for everyone?
Just curious...
If you want the races to be eqal for everyone, I suggest an Aussie or Asian ghost and host, cuz they're in between both countries/continents. Best for you guys to do auditions on guys and choose the one that suits you best from Asia or Australia and minimises the lag to both US and UK players. In fact I think that the best option would be trying to find a host in Antarctica or on the ISS.