When it comes to carbon seat posts, never ever smear post with grease !! After a few winter months the post will weld to the frame, honest.
I've got a carbon post, use a dab of grease on it, had it about 8 years now, been out in all weathers, left the bike for months unused, never any issues. Not seizing, no mythical delamination, nowt.
You don't need much grease at all really. Just enough to enable it to slide into the frame.
The key thing here is what type of grease. I've used Silkolene RG2, which is formulated specially for use with stuff that has rubber seals, and can be used in suspension forks. Other greases may contain chemicals that can damage the outer layer of a carbon post. RG2 seems not to attack softer materials. Never ever ever use Vaseline on anything to do with a bike. It is wronger than wrong. Very damaging to rubber and possibly carbon resin.
Be useful to find out what that Pace carbon grease really is, so as to get it a lot cheaper. It's probably just some other commercially available product marketed as 'special' and costing shit loads more.