Nice review Tom
The Tempest fans should improve your temperature situation nicely. However, it doesn't sound like your conditions were very good that night as Omega Centauri and 47 Tuc are crowd pleasers in my C11 Edge, and the dark lane in Centaurus A is pretty easy to see. Obviously, you're downsizing from a 16" scope to an 11"...which would make a big difference with the fainter stuff.