Nice job! I originally didn't like the idea of the blond trim on the mahogany, but after seeing it, I have to say it looks pretty good. I like how you covered the bottom plastic strip on the tank and assume you will also do that on the canopy.
Cabinet entry idea is interesting, although I do have some concern about humidity effects inside the stand, especially if you run an open sump. Just something to think about ~ maybe a ventilation fan? Salt creep may also become an issue down the road, making it difficult to slide that panel out. Again, just thinking out loud so to speak. Nice job on the build thus far.
"Listen to some of these guys talk, and it's like they were born from their momma's belly with a fishkeeping encyclopedia in one hand and an API kit in the other" (unrevealed).