If you want something cool looking and must have big aluminum tubes, do yourself a favor and get an actually good, cool looking aluminum frame like one of the Cinelli Mash frames if you can find one or the new Mash without Cinelli ones. The problem is that a good frame like this will blow more of your budget than a comparable steel frame. However lots of hipsters buy them and then sell them on Craigslist when the next cool new thing happens and they need an electric skateboard.
Aerospokes, the ridiculous wheels you want, are similar in this respect.
Or get one of the sh*tty aluminum ones you want. I suspect they won't be much lighter than good steel frame, but if you like the look, go for it.