Seems to me like there are too many unknown variables for anyone to be able to give an answer.
What is the bin code of the 5W and what is the Vf of the 2 leds?
Are you defining brightness as total output (lumens) or throw (lux)
That said the currents that you have stated seem to be underdriving both of the leds.
You'd need a bigger reflector for the 5W if you want it to throw at all.
What form factor are you considering?