I experience a noticeable speed boost on a machine with an 802.11 a/b/g card connecting to an 802.11n router when I use the 5 GHz connection over the 2.4 GHz connection. That kind of card gives the same theoretical maximum at 2.4 GHz (g) and 5 GHz (a), 54Mbps, but it's still faster on a 5 GHz connection. This is in an area that isn't even that densely populated compared to a large city (this city is less than 15,000 people, and there are always trees in view). Several factors can enter in. The availability of 5 GHz is a definite plus, regardless of the bottleneck that's built in to the Pyra hardware. The question is, how much difference does it make to the project's viability. If it can be practically done without risking the project, then I would say, do it. However, if it creates a significantly greater risk of the project never being completed, then I can certainly live without it.