Ride quality even worse than expected. Advice welcome.

I purchased the bump stops 72BluNblu recommended, but nowhere near to being on the road yet. My guess is you do have a range of travel issue at the very least, & these would be a big step. torque sequence & weight on the wheels also.
I hope to hear a good outcome because I will be going down this same road (though not as soon as I'd like)
Love how your car is looking MRGTX