This looks awesome so far! The heat sync is a massive beast, love it.
When looking into the acrylic, did you manage to find some that doesn't pull out some of the light's spectrum? When attempting to make lids for my tank I ran into this issue and ended up scrapping the project. $200 worth of acrylic lying around now
Are you planning to put any bracing in for the acrylic? That stuff likes to bow like crazy in higher humidity and temp.