Skimmer should be fine, that looks like a Sicce on there, no? Keep up the good work, and post pics when you can. What are you going to do with the rock scape? I would at least not completely trash the idea of doing a reef. You have a decent skimmer, good lights, why not?
With the right livestock list and a couple bucks here or there you could have a very nice reef. Frags of softies are cheap. Get some zoas (they don't have to be the designer crap) some GSP, some leathers, and sinularas. Do a 30% water change every couple of weeks and your good to go. I wouldn't even worry about dosing for now.