Why not run both? Looking at the bolt cards, and trying to stay away from multicolor and the truly bad bolts, I think an updated list could be:


4 Goblin Guide
4 Eidolon of the Great Revel
4 Monastery Swiftspear

4 Lava Spike
4 Lightning Bolt
4 Chain Lightning
4 Rift Bolt
4 Skewer the Critics
4 Fireblast
3 Price of Progress
2 Open Spots for (Sulfuric Vortex, Searing Blaze, Forked Bolt, Grim Lavamancer)

19 Lands