I'm posting this merely as a precaution and as an educational tool.
I fully intend to hit 110 as quickly as possible and grind out my artifact ENTIRELY before raids are released. That is my plan.
Blizz has yet to release a schedule for raid releases so there is a small chance some people may not have their artifacts leveled up entirely before the first raid comes out. Its unlikely but then again some people may not be able to put as much time into it as I can.
So I firmly believe that planning a path for your artifact talents ahead of time is the way to go.
http://legion.wowhead.com/artifact-calc ... CgMwsBVDAQ
Use the above link and select your intended class/roles artifact and just go over the spells/traits if you haven't already.
All the traits have some level of importance but some are clearly better than others. So if 1 trait stands out as being the best option for raiding early on then you should plan to have portion of your artifact filled out come raid time.
A good example is the fire mage artifact. The Phoenix Reborn trait is an amazing tool and there are 2 paths you can take to get there. you can go the top path and fill out blue flame special then scorched earth. Or you go the bottom path and fill out Great Balls of Fire then Big Mouth. Imo GBoF beats out BFS in terms of pure dps plus the Dragons Breath range increase could become useful so the bottom path would probably be the best option if you're struggling to farm artifact power.
This is just a useful tool you can use to maximize your stock of artifact power efficiently and become raid ready as quickly as possible.
Good luck guys!