I would NOT anti-seize the crank bolt. I put antiseize on the part where it slides onto the crank, not the threads on the bolt.
What locktite are you using, red? Red is what you should be using. There is a super gnarly green you can get if this is that much of an issue. Other than that I've NEVER heard of damage from overtorquing this bolt. I'd put it on as tight as you can by hand, or set your impact on RFT and that should do it. I assume you got the larger crank bolt with the Euro damper?