Thanks Ray-

I guess I can just set it to mine ZCash instead then?  And then switch the ZCash difficulty get too high?

I'm not trying to make a fortune here, I just want to get a rig so that I can learn to mine and getting a small rig seems like a good way to learn.  I just don't want to spend over $1k and have the GPUs die in a few weeks because of the heat.