Would heavy bombers have helped a Taranto carrier strike?

Would an RAF heavy-bomber attack before the Fleet Air Arm strike on Taranto have been viable?

It might have depleted Italian anti-aircraft ammunition, but the warning it provided and the bombers' limited accuracy could have outweighed that benefit.

A preliminary heavy-bomber raid created a genuine operational tradeoff. It could have forced Italian anti-aircraft batteries to expend ammunition, yet its arrival would also warn the harbor that a larger attack might follow. Limited accuracy against capital ships reduced the likelihood of decisive direct damage without later-war weapons. Wellington bombers would probably have needed to operate from Malta, adding another basing and coordination constraint to the combined plan.