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well.. you're changing your design? 9Vs can power a lot of LEDs, put 'em in parallel or series with a 1K resistor. A lot more can be powered in parallel, since in series will cause a drop in voltage which depends on the forward voltage of the LED.
This circuit isn't very good, expect to see the LEDs get brighter and dimmer as the light intensity changes. You won't get sudden switching, unless you have the relay or another transistor.
It sound like you've got R1 and Q2 the wrong way round.