Looks like you have everything you need, although if you have CO2 already, the excel isn't really needed unless you're using it for algae purposes. Excel is used mainly for situations where CO2 can't be done or for small tanks where a CO2 setup is not desired.
If i were you, I would look into dry ferts from rex or aquariumfertilizers as it is much cheaper in the long run. $15 can get you all the ferts you need and it'll easily last you over a year whereas you'll probably spend double or more on the flourish line for your size tank.
If i were you, I would look into dry ferts from rex or aquariumfertilizers as it is much cheaper in the long run. $15 can get you all the ferts you need and it'll easily last you over a year whereas you'll probably spend double or more on the flourish line for your size tank.