What are you riding now? Previously riding?
I'd encourage you to start paying attention to what gears you actually are using.
So, if you are rolling in the 48x11 a lot, then consider something bigger. If not, then don't bother.
Likewise, if you're rolling in the big ring most of the time, then there may be no need for a triple or a 30+ tooth cassette.
Personally, I find that carrying or pulling cargo chews up the gears quickly.
But, otherwise, I just don't really need or want extremely low gearing.
I suppose you might also want to consider if your commuter is a multi-purpose bike. For example, do you wish to take for loaded touring?