If I don't get straight haste I don't reach 14876 breakpoint, which I thought was pretty important. I thought it was acceptable to go for that haste point
That's where I was inferring it from.A haste breakpoint is when a sudden rise in DPS occurs due to an additional tick of a DoT appearing after a specific value of haste (a breakpoint). The most notable one for Shadow in Patch 5.0 is 8085, which should only become a concern once you are in at least ~495 item level. Generally, below this item level you want to prioritize Intellect whenever possible, while picking up socket bonuses when you can - and reforging to maintain hit cap and then maximize haste.