Dont worry too much about artifacts. Gem of lost memories and orions belt are amazing for leveling. But the rest of em, there really arent too many essential ones. I find that I rarely use them since the /use timers are 15 minutes. And they usually have HORRIBLE utility numbers compared to dragon loot.
Whats nice about these days, is that you can make a template and easily get almost every single item. Either its going to be dragon stuff (you farm dragon scales), or artifacts and master levels (you farm glass), and now I believe The caer sidi and other epic zones even have items to farm that you use to buy the armor.
The only items that are still hard to come by and cost alot are astral and labyrinth items. And these are by no means essential.
So good luck, enjoy those free levels every 5 days. And remember to log out in your capital city. You build up more rest experience here than anywhere else. Ive seen it in action while leveling. I will level way quicker than my uncle that didnt log out in the city.
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Codds
Robcodd - One of the first level 50 cabalists on Iseult