Edyst, I don't understand your question because you don't say what your primary attack is. Most Elementalist builds will take a single spell (Volcanic Orb, Lightning, Flame Surge, or Ice Shards) as their primary attack and use their staff as their secondary. Krynn here has heavily pumped his CD and considers his staff his primary attack - and apparently needs no secondary. (Note that this build will die horribly to the Greek telkine, but is otherwise fine)
For a normal Elementalist build, you will want to pick one of the elemental attacks I mentioned as your primary, and pick your gear - especially your primary staff - to support it. Now, since you are an Elementalist, presumably you wanted the Storm stuff so I'll assume that you chose Lightning as your main attack. This means you have a lightning^3 staff (lighting-baed staff "of thunder" or better for +lightning+%lightning, with thunder relic) and as many +%lightning other things as you can manage. Your primary attack (used to take out a whole group before they see you) is Chain Lightning; your secondary (for cleaning up stragglers) is the staff. On your weapon switch you have either a cold or fire staff; I recommend fire because there is no cold charm. The purpose of the switch staff is to help with highly lightning-resistant enemies, when you don't yet have Obscured Vision maxxed out. An example late-normal skill build for this character, who has split priority between maxxing his chain lightning and his Core Dweller, would be
http://www.titancalc.com/TitanCalc.a...-1-0-0-0-8-1-0.
The same character at level 50, with all his main skills maxed and well into maxxing Eruption for extra boss killing power, looks like
http://www.titancalc.com/TitanCalc.a...-1-0-0-1-8-8-0.