Project Orion - riding nuke explosions - using existing tech/materials and those 100K nukes that both sides had at the peak of the Cold War would bring a 30K to

Project Orion - riding nuke explosions - using existing tech/materials and those 100K nukes that both sides had at the peak of the Cold War would bring a 30K ton ship to the 5-10% of c. Curiously, getting all that 100K+ ton of hardware to LEO where one can finally start exploding the nukes seems to be more complicated task right now.