I'll vouch for BRK. The drive is nice and the store is even nicer. Big retail space and tons of fish and a large selection of corals. Take the kids during nice weather and you can feed the koi, unless they stopped doing that.
You could always plan to take all of your corals with you at the same time you bring your light and just have it light up one side of the tank and have your corals on that side. I did that when I upgraded from a 37g to a 90g.
Might be a good time to change anything or fix anything on your tank, like maybe the stand. Are you going to have enough room for all of your projects?