Sounds like it will be an awesome car when done. Don't forget, I'm always looking for new cars and projects to become a part of Lateral-g.
As for quantifying the upgrades... I'll tell you that you'll be one happy guy. In stock form, the 1st Gens handle like a school bus and ride even worse. I was priveleged to get a ride in the Mule, and let me tell you, that is one sorted out car. It's exactly how I'd
like my car to ride and handle, but we'll see. Mark has forgotten more about suspension technology than I'll ever know. I'd say with the upgrades you're making, it should have that tight, solid, European type ride that will blow away that 88 IROC you mentioned.
Maybe Rob (rwhite69) will chime in. He has the suspension mods done that you've listed and I know he's thrashed on his car.