According to the specs posted here, you're well under the max weight limit: Infrared - Dagger Kayaks
It's not abnormal for a whitewater kayak's bow to get very close to the water surface when you lean forward. In fact, it's an important characteristic for a whitewater playboat so that you can get the bow under the water to initiate tricks. (Though the Infrared isn't exactly a play boat.)
And, as you noticed, the result is that the boat is not ideal for flat water paddling performance.