Mixing Terra Configs for different dimensions generation.

I'm trying to figure out if there's a good way to mix and match 3 Terra mod config files to get better world generation in multiple dimensions. I have 3 configs in mind that each seem to only change 1 dimension each.

So far the only way I've thought of to do this would be to generate 3 worlds with the same seed, one for each pack, and then mix the files around, but this would presumably break any new chunks in at least 2 dimensions. Is there a better way to do this or am I just looking in the wrong place?