Any thoughts on an 180(L)x35(W)x50(H) tank?

I got the idea to segment like 25-30cm of one side into a bog-style filter with a bunch of plants n shit, like I did my duck pond. That should give a pretty good amount of bio-filter.
Also considering just Tannin it up and making it black-water style cuz those look cool (and the area it's in is very sunny by nature)