Ingredient Substitutions, what can I expect?

[greglovesbeer]

I've brewed a batch of the CYBI Green Flash clone (all grain), but B3 was out of a couple of ingredients. I've made the substitutions, can someone chime in and let me know how the substitutions may impact the final result

Grain Substitute:
carafoam for carapils

Hop Substitute:
magnum for columbus

Thanks
-Greg

[ChrisKennedy]

Is the Magnum for bittering, or is it also a late addition? If it is bittering, the difference should be minimal.

[greglovesbeer]

It's all the way through.

Both had an AA of 14%

Hop Schedule:

0.50 oz. Simcoe Pellet 11.90 24.5 90 min.
0.25 oz. Columbus Pellet 14.00 13.1 60 min.
0.25 oz. Simcoe Pellet 11.90 11.1 60 min.
0.25 oz. Columbus Pellet 14.00 6.7 30 min.
0.25 oz. Simcoe Pellet 11.90 5.7 30 min.
0.75 oz. Columbus Pellet 14.00 10.5 15 min.
0.75 oz. Simcoe Pellet 11.90 8.9 15 min.
1.00 oz. Cascade Pellet 5.75 4.3 10 min.
0.50 oz. Columbus Pellet 14.00 4.4 1 min.
0.50 oz. Simcoe Pellet 11.90 3.7 1 min.
0.50 oz. Amarillo Pellet 7.50 0.0 Dry Hop
0.50 oz. Centennial Pellet 10.50 0.0 Dry Hop
0.50 oz. Columbus Pellet 14.00 0.0 Dry Hop
0.50 oz. Simcoe Pellet 11.90 0.0 Dry Hop