I think tac is weaker than storyteller, temple is too slow. It is better to open with bridge or dismantle.
The latter looks interesting - here is a plan i expect to be clearly faster than T17:
If everything works out, we can
open dismantle/silver
T3/4: Buy silver, silver; dismantle estate into copper, gold -> 17$, 15 cards
T5,6,7: Buy storyteller, storyteller, bridge; dismantle one more estate -> 22$, 17 cards (not counting Storyteller)
T8: draw your deck with two storytellers spending 12$ -> play bridge, buy villa, buy two more storytellers
T9 - T11: explode with bridges/villas/HOP/storyteller
T8 involves some luck, and we might also have bad luck in the beginning, or dud during T9-T11. But I don't see a reason to expect losing more than two turns on average, we might even get lucky with 5$ in T3/4.
Therefore, a megaturn in T13 or similar seems realistic to me.