Spawning into a certain Biome

Being able to select which biome you desire to spawn into would be a nice touch. I am a seedaholic I spend more time creating worlds until I find one I like at spawn then actually playing to game. This wouldn't be so bad but the Biomes are huge, the first thing I do now at spawn time is hit F2 and fly around to check for a good location to build. I very rarely see any other biomes before the map has to regenerate/rebuild and this takes so much time I just give up and try a different seed.