You're not off to a bad start, you should keep reading and learning before you go any further though. It was your #1 priority for a power head, it's good that you got one - but it's also unfortunate you bought one that doesn't really perform the way you will need it to. You need more surface agitation, definitely could use some stronger lighting, but your LR will be okay without it, corals would be another story..
I think what everyone is trying to get across, you are on a small budget - it's better to be on a small budget and buy the equipment you need ONCE, by researching, rather than tossing $50 here, $25 there. Eventually that adds up, and in many cases in 3 months you'll have $500 worth of equipment that isn't worth a snot.
Crunchytoast, you will likely not find a 1 dollar per pound cured live rock deal..anywhere unless you stumble upon someone getting out of the hobby. Everywhere I've looked, it doesn't get any cheaper than what I pay locally. But if you have a source for cured live rock, if it's truly cured and in good shape, you may not ever detect a cycle. I never detected a cycle in my tank using cured live rock.
What is your SG?