Learn to love
AMIDST it works much better with the new temperature mapping system for modded worlds (because
Pioneer Terrain Survey by TTFTCUTS hasn't updated unfortunately, it was the only tool that worked in a similar manner to AMIDST that explicitly supported mods, because it ran in-game).
That being said, I wish I could choose the old biome distribution method, or one that's MUCH more strongly weighted towards including all the "non special" biomes at LEAST once before the "average minimum mushroom island" distance (which I want to say is about 10k). Just hit new from seed using AMIDST and note how few jungles, ice plains, mesas, and taigas you see when the map spans 20k blocks (10k from 0,0). It took me nearly 100 seeds to find one with a jungle under 1k from spawn that also had Mega Taiga, Ice Plain Spikes, Mesa, Desert, Swampland, Mushroom Island, Extreme Hills, and was mostly Forest/Plains, not desert, swamp, or one of the cold biomes. It's still not what I want, but at least it has all the parts in the overworld. If I need more, by that time I do have RFTools, so I can make single-biome worlds.