Nice guide! Have you tried to use xmr-stak-amd or claymore cryptonote to see if you could get higher speed than what you've already achieved?
Pretty sure you could get more speed than that!

Thanks Tristan1337!
Yes, i have used both and i could not match sgminer, the multi-thread, by far, exceeds both of those.
Yes, it seems some people have better luck with sgminer and others with xmr-stak-amd. Not really sure why.
BTW, which memory straps are you using for those cards?
For samsung i use the Uber straps (google it, i don't remember the site on top of my head), for the rest i use 1500 straps and i start at 2100 with 1150 gpu and going down ~25-50 on memory until i see no memory errors for both CryptoNight and ethash. Takes a while but after it'd done i don't have to touch them at all, they just work and are reliable.