EGR bypass?

I concur with the fellas.
Once the 4bbl goes on,You will likely be driving it differently, and you will likely drive it less and less in the zone where EGR can be a benefit.
If you up the cam, it will do the EGR thing by itself.
If you up the compression, you won't want EGR in any case.
When things get hot,or the fuel gets stale, EGR can cause problems anyway.There is really no place in a performance engine for a factory EGR system.

On the other hand, if the rest of the engine is stock, and is to remain so, and you spend a lot of time at part throttle and cruizing,AND you have not yet bought a carb and manifold; well then I think I would try to keep it functional, as it can improve low speed-low throttle performance. But it has to be running tip-top.
And/But, I certainly wouldn't replace an already purchased non-EGR pkg.