Ridetech Coilover Ride Height Adjustment

[chuckd71]

I have this setup on my Chevelle with AFX spindles and to get anything close to a decent ride height I have to have the bottom flange screwed up about as far as it will go. Running 700lb springs that ridetech suggested and it's about like driving a go kart, so I'm thinking about switching to a 650lb spring.
I bought through MCB and only have a few hundred miles on the springs (600 if you count the 200 on a flatbed) but it's been a little over a year so it's probably outside the swap out period. Anyway, would a slightly softer 8 inch spring help or would a longer spring and less elevated perch be the way to go? My body bushings are completely shot so that isn't helping, but the car went from driving like a boat to driving like a high schooler's civic (which would probably be ideal if I never planned to carry passengers that wanted to be comfortable).