The whole steel thing is overrated (go figure). Sure, steels can be nice to dive, given the right setup, but it's just not *that* important to many of us.
Would a can light be better than my dinky lights? Sure! Would "real" drysuit undergarments save me a bunch of lead? Youbetcha! Would double steels give me more air than my single aluminums (while allowing me to take off some lead)? Indubitably!
As for me, however, I gladly chose to dive the dinky 4- or 8-C lights. I bought the $50-80 eBay fleece undergarments. I have aluminum cylinders. I decided I simply didn't need "the best", as "not quite the best" is still pretty darn good. The incremental cost vs. incremental benefit of going to "the best" is just too high for me to justify.
If I were planning to go full-cave, a can light would certainly be justified (and, IMHO, required). If I were doing ice diving in Antarctica, really expensive undergarments would be delightful, I'm sure. And if I were doing long deco dives, perhaps I'd be diving doubled HP130 steels. For my simple recreational dive profiles (and balmy temperatures -- haven't seen a leading three, at least

), I like my gear.
Anyway, all that to say, you have no dilemma. Buy an AL80 or so. If you go super-tech, you can always use it as a stage or deco cylinder, and if you want to get rid of it someday, that'll hardly be difficult. There are some people who might look down on you for diving aluminum, of course, but better to find out who they are early so you know to apply the zealot discount to their advice.
(Blue Water's fun, by the way, but I still haven't managed to fix the printer about 80' down by the pipes.

)