Hey KP, IMO, it may be a little too warm, but at the same time cuttings can except warmer root temps in bubblers, but for vegging and flowering plants in DWC, the 60's are what you want. The cooler temps hold more O2 in the water for the roots. I would ride it out though because I have hurd of peple going with warmer temps for cuttings. To keep the room a little warmer, why not run the lights at night, or 24-7 for first 2 weeks of veg??
Adieu little lady