Sounds like we are in the same boat age wise. I recently had a challenger rt rental with a 5.7 in it with an 8 speed transmission. I liked how it wasn't harsh but still handled well and how it had a good engine note but wasn't loud. Now my exhaust has a silencer I can throw in and out in like 5 minutes that quiets it down to stock or below levels.
I was on eibach sportlines. I didn't like the from the get go. They looked good, and rode good on paper smooth roads. But the slightest of bumps was jarring. To both me and the car. And every time I was backing out or I turned the wheel all the way they would pop all the time.
Another thing was as I've been researching suspension I've been learning. 1, stiffer isn't alway better. It may feel like it handles better but that doesn't mean it does. 2. Softer springs tend to maintain better tire contact with the road due to their ability to compress more. Which I felt, with the sportlines any bumps in the corner would upset the balance so much as instead of the tires oscillating to road conditions it was just hopping due to the stiff springs. And 3, suspension need travel to work. In an ideal world suspension travel and ride height would be separate, but they aren't. You want the maximum amount of suspension travel with the roll center right at the ground (not slammed or stanced which puts the roll center below the ground. So you have to find the best middle ground.
Engineers at Honda built this car to function properly in its role. Some things that a lot of engineering goes into (suspension) should either be left stock. Or gut the car and make it a race car. But you can't have both. Theres no such thing as a race car for the streets, as much as marketing would have you believe there is.
Thats the mind set I've developed over the years. So yeah, the hfp kit may be my best option.