I have a stand, maybe not what you want or need but am positive can be easily modified for what you want. It's already built, painted and in excellent condition.
As far as if this is big enough dimension wise, I have no clue. I have stated my willingness to help you out if possible, just was curious of the deminsions you desired to see if the stand I have would work for you. If not, I'd prefer it go to someone who has a similar dimension need.
Here are some pics. Stand was made for a 25g lagoon with a 30"x15"x15" sump underneath.
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