If you are serious about soloing to 50 you may want to consider rolling gnome for 40% haste click sleeves.
In terms of weapons, are you looking for a set that will take you 1-60, or are you hoping to mix and match as you level up?
For the record, I wouldn't recommend the cobalt gauntlets. It is short duration, some of that time the effect actually lowers the target strength... you are better off just sticking to the self buff boots.
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