They also advised us to ground each head separately to insure proper grounding with aluminum heads.

That is one of the most over look things using aluminum heads and with a all aluminum engine it is a must.Its best to ground each head to the same place on the block and run a ground wire from there back to the -Neg on the battery.

As for the Anti-Seize I never use it on my Race engines as mentioned above they get changed often,but on Street-Cars that go 1000,000 miles I use just a small amount.