You are giving opponents something to do with their counters, and you´re not adding storage counters due to tapping out (or mostly). I'm not sure it's worth it, specially with Lightning Bolt back. I'd drop the non-hellkite dragons, probably one D-Storm, and go the Pyromancer's Swath/Damage/Spinerock Knoll shortcut. Now if only there was some way to tap out their lands... Gigadrowse is a big miss...