I would leave the HPS and make a stadium screen as described in my link above. You could have fluoros in the veg section, or supplement the bud section with them, but flowering is very important to me and I want my flowers to get truckloads of light. I'm pretty sure that T5 lights have a lower radiant flux than HPS for the same wattage.

If you get fluoros for the flower section, be sure to get 2200 or 2700K color (not between), preferably 2200 but good luck finding it. If you do could you please post a link?

I'm not sure what you mean by your special spot. That's not the G spot is it?