Just my opinion here and this should not be taken as fact:

I have grown under flouro and, well every kind of light i can think of. I do not use flouros except for cloning, because the ratio of power and heat to light output is horrible. Ya, i know it doesn't seem like they produce much heat because the bulbs are so big and it is spread out but they do. Info on this is all over the place, just look up light efficency and read on.

Finish this grow with the flouros and the HPS as soon as you can get it in there. Then just use the HPS and SCROG the area under just that light, no side lighting, your yield will increase most likely by double. Just give it a try, everyone i know that has SCROGged under a HID has never gone back. Also note that SCROG was originally developped to take advantage of Flouros, it is just much much COOLER under a big HID.