yea, I was going to do the same but I guess this time my wife and kids will have a higher priority that my fish. besides the fish I want to put in that tank is still small (3") so will have a long while before it outgrows my 180g and need a bigger tank so I'm gonna push the project back to avoid pissing my lady who's carrying my second child.
just look back on the dimension of the tank, it's exactly the stand you need.
looks like I just did the design for you, may want to build a taller stand if you want to fit a nice big wet/dry under it.