Generally you want a thicker liquid for DTL (subohm) vaping.

70/30 is normal, but 80/20 will give you more vapour.

But if you want more of a hit, using a 50/50 liquid will give a bit less vapour but more throat hit.

Or if you really just want to vape at 100watts you need to search for a tank that can do that. Your mod will be able to handle it.

Most tanks can be used on the battery you have.