Nice tank. How thick is the acrylic?
Tall tanks aren't difficult to maintain as long as you have the right tools. Get a long grabber (I like the 51" Unger Nifty Nabber), build a gravel vac (I used 1.5" sump pump tubing from the local hardware store and 4' of 2" PVC pipe with a 4" to 2" reducer fitting for the mouth of the vac) and a magnetic algae scraper and you're all set.
IMO, tall tanks look amazing; so much more impressive than short stubby tanks. The only downside is that you have to get a fairly powerful pump to overcome all that head height.
I would suggest not putting a traditional canopy with a top on it. Instead, just build a faux top, that just rests around the rim so that it looks like it has a top, but the top is actually completely open. That's what I did with mine and 1.) it makes maintenance a lot easier and 2.) you can't tell that it's just a facade because the top of the tank is so high.
Looking forward to seeing your setup once you have it up and running.