You know I wonder about the 75 with all the hair algae. I have never had the stuff so unfortunately I am no expert on hair algae removal but I've read tons of posts here on RC that people try cooking the rock, scrubbing, all kinds of stuff and cant ever get rid of it and end up replacing all the rock. It sounds like a $100 deal to me, otherwise not worth the trouble. Why start out with a problem? I'd rather start fresh.
For example, everything you would need can probaby be bought used from most of us or the RMRC. I have bought very nice fiji Live Rock for $150 for 100 lbs. off of a RMRC member and I bought a bunch of very purple encrusted rock from neptunes realm for $100 for quite a few large nice pieces. So really theres not much of any use for the 75 if the rock and equipment sucks, you'll firesale that stuff and maybe only recoup $50 for it all, or maybe less.