Your tank is calculated around 291 US gallons.... T5HO is fine for that size of tank, lighting any planted tank is going to be a little hard when it comes down to what bulbs to use in the fixture. Bulb selection in my opinion is more important than deciding how much fertilizer/s to add to the tank lol. Bulb selection should be based on wavelength first, this is because of the following image...
The above image shows a plants chlorophyll peaks, which is very helpful when selecting bulbs to use on the tank; Here's my bulb selection for when my 45 gallon long was a planted tank.....
48" Odyssea T5HO Quad 4x54w - From front to back the bulb selection I decided on... 6400k, 12,000k white actinic, 6000k, WavePoint Ultra Growth Wave. Here's the WavePoint Ultra Growth Wave bulb wavelengths...
Because plants have 2 chlorophyll stages to them, chlorophyll A & chlorophyll B. The ultra growth wave bulb hits almost 95% of the chlorophyll peaks, and is the only bulb on the market specifically designed to cover both plant, and reef peaks to enhance growth.