On the burn, you want to think about surface. But all surface things being correct, *I* would go with a pin axis drilling. As long as your angles don't open up much, you should be good.

I would be worried about a full roller drilling pulling the track up over the thumb. Throwing a full roller layout might really change the bowtie location.

And by full roller, I assume you mean cg near grip center, and the pin at 7:30.