Id run the strip about 5" from the back wall and drill a hole for the wire unless you already have a hole you can use... Don't do anything untill you have the LED's so you know the size hole ect.. I wouldnt use the T8 silicone. It stinks and has to be aired out to long. They sell silicone at lowes for $3.59. Get the small tube just to use for this. It dries completely within 30 min and sticks within a couple min.
thanks for the advice; this is probably how i'll go about it. should be fairly simple: a hole and some silicone "gluing." i probably have some silicone lying around the house, actually.