one thing to keep in mind with the kind of wattage we are talking about for a tank this size (450+ W) is that you will need to have a fair bit of money set aside at the beginning to invest in a lot of plants. and I mean a lot.
otherwise, if you plant too sparsely with 450 or so watts of light on the tank and you are adding fertilizers, if you don't have enough plant matter to out compete algae you can end up with green water or other types of pest algae (eg black beard algae)
extreme wattage requires lots of plants to keep things balanced, otherwise the algae can win out.
one way to avoid this would be to perhaps only add a few of the strip lights at the beginning as you are planting things up, perhaps only putting say 4 lights across for example instead of 6.
as the plants beging to grow and you are planting the trimmings, addding more plants etc. then you can add the other lights and slowly begin to increase your fertilizer dosage etc.
just something to keep in mind.