First of all, exactly how many watts will the whole tank have? Is that one or two 55 watt bulbs? If it's two, that's around 3.5 wpg, which is good, but it will require some fertilization. what I've learned here is that the higher the light, the more healthy plants you can grow, but the higher the maintenance. If it's one 55 watt tube, then it's less than 2 wpg's, which would make it lower maintenance, but may limit the type of plants you can grow.
As long as you're adding DIY CO2 and fertilizer, you'll probably be happy with your result. Eco complete was a great choice for substrate and should reduce the amount of fertilization that's required. The biggest maintanance chore for me is the weekly water changes, which I have found to be neccessary for keeping a planted tank. However, my tank has lots of light and is heavily planted.
Maybe someone else with more experience with low maintenance/low light tanks could chime in here...?
I see that you're in OC. Are you coming to the COAST meeting next weekend?