You currently have the typical N.O. 10w per foot of lighting that almost all hood lights have. They produce relatively poor usable light for the plant and are pretty much maxed by design at 10wpf (not counting overdriving the bulbs). Anywho....
I have the exact same tank as you and use this:
It's a great light that is silent (no fans) and seems to be of very good quality. My only possible regret I have was to not purchase the legs (its summer and my tank tends to warm up quite a bit when the light is on during the heat of the day). I think having the fixture an inch or two above the glass top would keep the water a bit cooler. Other then that, I've had zero problems with the light and I've had it for about a year now.
I would recommend if you are new to planted tanks that you start off with a 50/50 bulb. Then if you decide to you can replace the bulb with the full usable 65w. Please keep in mind a daylight (6700 or 10000k) bulb will put your tank over 4wpg. This is quite a lot of light and nutrient deficiency and algae are very easy to induce. At at that level DIY or pressurized CO2 is a requirement.
If you order from that site purchase the extra 50/50 bulb AT THE SAME TIME YOU PURCHASE THE SETUP (Extra_bulb1 pull-down box), as the bulb is 1/2 price ($11). That's a cheap price for a replacement bulb and you can easily switch back and forth if you want to as each will give your tank a much different look.
I'm actually just switching back to the 50/50 from the 6700k bulb because of slight algae/deficiency issues and the fact that spending 30-60min each week cutting out 1/2 my tank is getting tiresome. I also remember again why I love the 50/50's lighting on the tank so much, it really brings out the shades of green/blue in the plants I have.