Best way to proceed with improving up 427 Windsor street setup

[Ace23]

I'm having a bit too much fun driving right now to pull the motor. I am considering a gearing change. I run 315/35/17 and I have a TKO-600 .82 with a 3.31 rear gear. I think going to a different gear could really take advantage of the current cam in the car for right now.My car does not buck but it likes to be about 2000+ when cruising. I am leaning towards 3.91 ratio and possibly going with a .64 5th gear. The gearing calculator shows 38mph-48mph in 4th between 2000-2500rpm and 5th will give me 59mph-74mph between 2000-2500rpm. That seems like a pretty good mix of back road and interstate speed. Does anyone run this combo or having any advice? The .82 does not really work out too well with anything much higher than 3.46. I loath driving down the road at 3000rpms when cruising so the .64 is pretty attractive to me. I wouldn't completely rule out 4.10's either......I think the largest issue will be traction as the current setup is 590HP / 570TQ. Just an inexpensive way to make the car feel a lot faster and it could use more gear for sure.
Thanks