Very nice setup. Don't worry about W/gal numbers, like Walter said, the intensity of MH makes them very suitable for larger tanks.
I like the planting, the two side setup isn't easy to pull off, and so far it looks good.
While the wood on the bottom is extremely awesome, I don't like the mix of too many different types of wood. It is nice to have some vertical elements, but I would have skipped the curly parts.
Once it grows in a bit more, it may become less obvious, and maybe the pipes and powerhead will be hidden a bit more as well. Then it will be perfect IMO.