You're going to switch out the 50/50 for the 6700K bulb right?
I'm not sure that fixture will fit the space in your hood properly. If that was my tank, I'd get the mounting legs, and ditch the all glass hood. I run my 20gallon that way, and the growth was better without the glass top.
You will have to add a little water every other day, and you could have issues if you have jumping fish.
Former advisor and planted tank geek...life's moved on though.