Ok thanks. I'm SSF so this is the wand I've been building towards. Finally got a T1 Fire Essence (two actually, so I do have a backup wand but all the other stats are garbage, it'd take a lot more work) and so I wanna use my Exalts to get my Trigger Spells going, and might as well do the whole multimod thing to boot.
I'm not averse to AS, but what I'm leaning towards now is crafting one junk suffix to fill suffixes, then Remove Lightning, and then Augment Fire (I have a Lucky one in my station). Looking at Craft of Exile, I see 5 prefixes I could hit: Fire % Damage, Fire # Spell Damage, Fire Gem Level (maybe blocked because I have +1 spell already?), Fire -> Extra Chaos Damage, and Fire DoT. So I have either 1/5 or 1/4 (if I can't get fire gem) chance of a bad outcome with the DoT. Otherwise, I'd have 3 very strong prefixes, and could then re-craft over the junk suffix for No Prefix, then Scour, then multimod into Trigger and one more suffix.
I'm actually looking real hard at 13-15% chance for Double Damage while Focused. This build is very loose with hotkeys, and I see I could work towards getting a few other interesting Focus mods, like 36% AS on gloves. I'll probably end up doing that just for the novelty (never used Focus before) and hope it works out.