IMO, if it's for display purposes, that case will be AWESOME! But, if you mean to use it literally as a greenhouse indoors, my question would be for what purpose? Indoors is already more protection than any greenhouse can possibly provide, and you'll just be introducing hurdles to overcome, like heat, humidity, and ventiliation. If you had plants out in the open (but still indoors) and used the same lights, you would get the same growing results. The addition of the smaller inclosed space will only add troubles. However, if the purpose is again for displaying your beautiful plants... then it's totally worth it!
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If you do put it together, please post pics!
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