55 Gallon Planted Bulb Question

I have a 48" AquaticLife T5HO 4x54watt fixture on my 55 planted and I've had it for a year + already so it's time to change out the bulbs. What I've been running is 2x6500K for 8 hours and the 2x650nm roseate bulbs for 3 hours. What would the best combination I could get for this tank be? I'm running pressurized CO2 and fertilizers so algae isn't as huge of a problem as you guys might think. I was wondering if a 6500k and 10000k combination would be better? I'd run the 6500k's all day and maybe have the 10000k for a 2-3 hour blast at some point in the day? What do you guys think?

- Dave