If I remember right, Level Zero is mostly a difficulty hack, so it shouldn't collide with the others. Six letter names doesn't need any free space, so it should only be an issue with things that already alter text display.
I'm assuming Reptite Reshuffle and Johnny Jackpot both required free space, and since they were developed independently, Temporal Flux used the same free space for both. Instead of applying both patches, you'd have to apply one, then apply the other to a different ROM, and export the changes through the export system.