I'd definitely recommend the CS products for "loafing."

What a great description!
I'm not sure you'll enjoy much success at increasing your range with a knife. Remember there's a tradeoff of energy: hawks are slower and heavy. Knives are faster, but lighter in weight. They whap in with about the same energy, which means if you're not sticking a hawk at 40 feet, you probably won't get there immediately with a knife. The speed delta isn't enough.
And
trajectory is dependent upon gravity which is a constant. Your knives fall at the same rate as your hawk does. With either weapon, your solution to increasing range is to increase the arc of your throw to compensate.
In other words, if your hawk is hitting the dirt at 30 feet, your knives will as well. It's the throw, not the weapon.
But here's the good news: you already know this, because you said 'with practice.' And that's the best part of throwing, isn't it? The practice!
Imagine what you'll have learned in 6 months time! Have fun, and good luck. Throwing different types of knives is the best way to improve one's overall throw.