OMG!: When are the Reef Gods going to give you a break? I'm so sorry to hear that. You are really going to need that time at MACNA, keep thinking of that!
Your reef should be fine with just the PH's. I had my reef off for >10 hours with just PH's while I constructed my fuge. Everything was fine. You may want to leave the MH's off if your chiller is not functional at this time.