I'll be following this thread. Good luck with it; should be fun to watch the fish school in and out of the plants and wood. I think your fish choices are great.
I'm also planning a 125 but will likely go with a canister instead of a sump... I simply don't have enough time to spend fine tuning a sump. But, there are lots of great threads on this forum regarding sumps. I'm curious why you are using the Hydors instead of in sump heaters?
You seem to have a lot of light there. I'm considering using 2 rows of T5HOs suspended over the tank, but I may add one additional row and consider a midday burst.
Good luck with that Bacopa. I never could get it to do anything.
Keep posting pics, and happy holidays.