I'm trying to get my 5 card 280x rig running but ive no idea if its going to work or not. I've used the bat file which cdub kindly posted above. I've run it and it is still generating the DAG file after over 1 hour. Is this correct?

It got up to 100% earlier,then it started again, much slower and I'm seeing all sorts of lines such as

gpu miner1 work loop....
Pause 9858ms
gpu miner 1 stopping 11812ms
gpu miner 1 workloop....
main start worker
 and so on...

should I be seeing this.

Sorry for the noob questions but I'm new to Ethereum...

Edit: it has started mining