your girl looks good man!!! I feel your pain on the males... years ago I bought 10 reg seeds while visiting in Amsterdam, the first nine were males!!! the last one was a female!!! I still have the strain alive today!!
I gotta say, I don't think your temps are terrible, an LED would totally change that. My GLH-180 only raised my small area about 3-4 degrees. I can tell you from my own experiences that i will always grow with LED in some form. I have only seen one grow using the Haight. It was a good grow, but I have no personal experience with it. but honestly the only three LED panels I see over and over with great results are GLH, Blackstar, and ISIS. any one of these three would work great in your space. the GLH would provide you with the most penetration out of the three due to the 90 degree angle diodes. the blackstar and isis can cover a bigger foot print of core saturation. in your situation, you don't require a large footprint.
I gotta say though, if the ONLY reason you are thinking LED is, heat reasons.... then I would suggest you getting a CMH bulb with a remote ballast. then there would also be room for expansion without buying a second panel.
but if you are steering toward LED because of heat, resin production, density, longevity... then yes, I would suggest an LED panel. but the CMH option would be much cheaper to start out. sorry if i confused you or made your decision even more difficult.
hit me up for any questions or concerns you may have.... and you are more than welcome to swing by my thread anytime to check out my GLH flowering.... two 180's in a 4x4.