Valakut Ascension (HELP)

i want to run the valakut deck with pyromancer ascension. im trying to take the deck to another level. i want to get lightning bolt, burst lightning or ancient stirrings (to grab a mountain or valakut or an extra land for explore) early so that i can pump the ascension and double up on all my ramp spells. i havent put much thought in to the sideboard. please let me know if you think this idea is viable, im gonna try it out this weekend and would appreciate the help. im thinking turn 1 bolt, burst or stirrings. turn 2 ascension or explore i like turn 3: harrow and ascension if i dont have it down yet. turn 4 and on: just keep pumping out ramp spells trying to charge ascension and burn out my opponent.