I think your light height will be fine.
Great design
I was considering something similar for the lights on my 5' peninsula, but ended up hanging them from the ceiling. Single 4' x 8 bulb T5 unit. Worked out fine. Easily adjustable, if I need to get 'em out of the way, but I keep it pretty high, probably 20" above the water. Yeah, it leaks light, but doesn't look bad.
You might start thinking about flow. Getting decent flow on the far end of a peninsula tank can be tough. I ended up putting a pump on the visible end of mine... just couldn't get the flow I wanted without it, and that was at only 5' in length.
Keep posting!
Great design
I was considering something similar for the lights on my 5' peninsula, but ended up hanging them from the ceiling. Single 4' x 8 bulb T5 unit. Worked out fine. Easily adjustable, if I need to get 'em out of the way, but I keep it pretty high, probably 20" above the water. Yeah, it leaks light, but doesn't look bad.
You might start thinking about flow. Getting decent flow on the far end of a peninsula tank can be tough. I ended up putting a pump on the visible end of mine... just couldn't get the flow I wanted without it, and that was at only 5' in length.
Keep posting!