AGA Modern Series Hoods & CF Retrofits

Has anyone purchased either an All-Glass Canopy or Oceanic Caps for their
aquariums?  I am in the planning stages of purchasing a 75 gallon planted
tank.  I have not been able to get any definitive specs in regards to the
specific inside layout of either of the two canopies I am leaning toward.
I'm thinking  4 Compact Flourescent 55watt retrofits should be able to fit
into a canopy that measures 48" by 18", even if there is a center wooden
brace of something.  Any experience or feedback would be most appreciated.
Ian