Boosting AC coldness and air flow

[EdwardSams]

About five years ago, we installed a vintage air system on my 1970 and it works pretty well.

Unfortunately, for where I live, there is often a lot of traffic which means we’re running at idle and when doing so the air conditioning is not as powerful and doesn’t stay as cold.

Right now I have a clutch fan, would replacing that with electric fans solve this issue? if so, based on the research I’ve done I apparently might be opening a whole new can of worms by making that conversion.

All guidance welcome. Thanks.

Ps, I’m running a sbc350.