Keith, I was never a TA31 fan although a lot of other guys seem to like it. It didn’t really “flow” well to me and it was harder to get into crevices. At least for me anyway.
The crevice where the head meets the china wall is one of those crevice areas and it needs to be filled or you will have leaks.
Everyone has their own preference here, but the way I do it is to not use end gaskets, but just use Dow Corning 732. I can put my caulking gun tip right in the corner where the head meets the block and shoot a dab in there before I lay my bead down.
For gaskets, I prefer Mr Gasket gaskets but again, everyone does things their own way.
To answer your question, you will need a thin layer around the ports on both sides of the intake gasket, and you will need to get the intake seated before it sets up. Once it’s set up and torqued down, it won’t hurt to remove one or two bolts in order to bolt your accessories down.