If only...
Range, my dear chap. The damaging conjuration spells in CA are almost uniformly of short range.
1st level: 5 Lesser Orbs - Short range, 1 target, ranged touch attack, no SR
4th level: 6 Orbs - Short range, 1 target, ranged touch attack, no SR
4th level: Blast of Flame - 60' cone, Ref half, no SR (max 10d6)
5th level: Arc of Lightning - Short range, line between 2 creatures, Ref half, no SR (max 15d6)
5th level: Vitriolic Sphere - Long range, 10' burst, Reflex negates, no SR
That's it. The only long range spell has a Reflex negation save.
Cheers!