Switch from CFL to HPS during flowering?

Sup?
So I'm thinking about shelling out for a nice little HPS (although I really want an iolite!) Been using CFL's the whole grow, what would happen if i switch now? I'm about 7 weeks into flowering. Check out my sig for the grow.

If you're 7 weeks into flowering it's kinda pointless, although I guess it could help a little bit. Other than that, your plant should be fine since it's far into the growth stage, alot of light shouldn't stress the bitch out too bad.