Yes to all. Each Blaze Location creates smoke, which drifts per A24.61. A24.61 ends with "Smoke drifting from a Wreck/Terrain Blaze is treated identically to that from an original white Smoke counter.". Since the original SMOKE source is a terrain blaze, a +3 smoke, there will be three hexes of drifting smoke (A24.61), not one as shown.