Oh, dear, I think you got the units completely wrong. MCD does not equals to Lumens. it all depends on angle of coverage, etc. I have not gone thought all the maths, neither can I be bother, your LED panel is like 1000th less than what you expect.
MCD=milicandela, not million candela. I am sorry to disappoint you about the figures. Also it is also healthy to add a CFL (or 2) to fill in the missing wavelengths. Ordinary LED just won't cut it, the commercial units uses high power, ultra bright LED that consume a watt each. I hope this help.