I have two "Sapphire Radeon HD 7970 OC with Boost 3GB" cards and I'm running cgminer currently. Bitcoin is a complicated and in-depth topic that I'm not too familiar with. And neither am I well versed in mining. So I would like some input on the settings I'm using for two cards. I disconnected the CrossFire ribbon cable, and I disabled CrossFire in the Catalyst Control Center. With an OC from 950MHz core to 1100MHz, I'm using the following:

cgminer -o stratum.bitcoin.cz:3333 -u worker -p pass -I 9 --gpu-engine 1100 --gpu-memclock 1425 -v 1 -w 256

I have MSI Afterburner installed to manage the fan speeds relative to the temperatures.

Does what I have look fine? The machine is a dedicated miner.