There are no bad suggestions here, but one thing not mentioned is that you can use poetics to trade for combat based grade VI materia in Idyllshire for 800 each. There are other ways to obtain grade VI (obviously) but it's no longer awarded through DF dailies (via clusters) and it's a 20 point stat increase over grade VII while requiring a much lower iLvl to meld. As you move into Shadowbringers, having some extra materia couldn't hurt.

Also, 2000 poetics might seem like a lot, but you can hit cap a couple of times a week just by doing dailies, so if you stay on top of it, you will find that they have many uses because they are basically SE's way of making sure new players can catch up.