Hello,
Eldritch Bow is the best but the mots expensive option to get for level 250 but it's also universal, that's why I would highly recommend buying that.if you would like to get something cheaper but also decent then I'd give a shot for a Bow of Cataclysm.
Ghost chestplate also fit pretty much anywhere because of physical protection and 2 imbuements slots (recommending life leech and other protection if needed). If you don't need the protection imbu then I'd say better option might be to wear Prismatic Armor with life leech because of 5% physical protection.
Fabulous Legs are totally worth to buy because they are kind of only one decent before Falcon Greaves, the physical protection and fire protection might be really useful on Asuras Palace where I guess you should try to exp.
Sadly I think only one helmet option for now is Dark Whispers but it's still better than elite draken helmet because of 2 imbu slots (distance + mana), kinda same with Winged Boots which aren't that bad and are super cheap
If you would like to make bosses then I guess Cobra Crossbow is the best choice to single target monsters.
And right now experiences and equipment, I'd recommend Asuras Palace but there you should have imbuements which would be Depth Lorica with fire and life leech. If you do not want to buy more equipments then you should consider using equipment on specific spot, you research the protection and where could you use them.