Also I know that with remote control there's always some lag due to the internet connection, my family lives in europe and I'm located in the US (planning on bringing the miner there on my next visit). Would that create any lag issues due to distance?
UltraVNC with Tight encoding, 256 colors is very good for slow connections, but it's annoying to set up: open ports on router and use dynamic dns.
However, I'd suggest you to lower the voltage of the cards down to 0.9V and the core to 950 ~ 1000 Mhz, to see if temperatures become acceptable.