Estes controller will be PLENTY to make them go, IF you're using Quest Q2G2's. Unfortunately, they'll also all go when you do a continuity check! Swap the light bulb for an LED or a piezo buzzer and you'll be low-current safe. You only need the big 12V relay launcher with igniters that pull more current. The Q2G2's will pop if you look at them cross-eyed!
-Ken (cluster fanatic)