When I was on a research fellowship in Poland in the late 1980s, I was amazed at the work people were doing in makeshift darkrooms in apartments that were too small for comfort even without a darkroom and in times of incredible shortages. Since then, I've never thought that I didn't have enough space for a darkroom, and I've managed to make the dark/bathroom more efficient as I've used it in two Manhattan apartments now. We're moving to a new place later this month with an extra bathroom, so I'll be able to have something a little more permanent, but the main issue is that if you want to make wet prints, you can do it, whatever your circumstances.
I also have an HP B9180, and it's a fine inkjet printer. I like some of the options it gives me for color--particularly choice of paper surfaces--but the best B&W inkjet prints I've seen just don't compare to fine silver prints. That doesn't mean that you'll necessarily make better prints in the darkroom than you will with a computer, but I think that darkroom prints are potentially better than the best you can do with an inkjet printer.
More important than the method you choose is that you go to galleries and museums and participate in print exchanges and spend a lot of time looking at fine original prints, not reproductions in books or on the internet, so that you know what the possibilities are and what can be achieved, if you work at it.