Help with astarion build

So I've been trying to get astarion better gear because I don't really know what to put on him. I just kind of threw together what sounded like a good combination. Like boots that give him misty step along with two rings that gives him invisibility and pass without trace. But I will give you the full gear nonetheless

Headgear: covert cowl Cloak: fleshmelter cloak (don't really have any cloaks just threw one on him for extra stats):) Armor: spidersilk light armor Boots: disintegrating night walkers Rings: shifting corpus ring and the ring of shadows Weapons: (my astarion is a dual wielder, so he has 2) The sword of life stealing and the knife of the undermountain king. Oh I also threw a crossbow on him for range

Anyways I thought a few of the items I threw on went really good together like the misty step boots with the invisibility ring. But I still feel like some improvements can be made. I'm about to reach level 10 and I just finished act two pretty much, cause the only thing left is a bugged side quest I don't want to do. But I would like to see if yall could give me some better ideas, cause I did throw some bs on him too lmao