Rives, do you think that this relay would be good for running a 30a panel with the 2 15a for the lights?
http://www.homedepot.com/p/Square-D-30-Amp-Power-Relay-Coil-8501CO7V20/202495853
Yes, that would work. However, the one that I linked up above is rated for more amperage, is cheaper, and also has normally closed contacts so it's a little more versatile.