This is exactly why I never wanted to mine using the nicehash interface, since your options are very limited.

You can always use other miners, like nemosminer, nplusminer, multipoolminer, etc.

They are not so user friendly as nicehash, but once you manage to set them up, you can use any major mining pool you want.

For now, just like mindrust suggested, mine more and withdraw to your address. Good luck.