If you're in the 90+ range of attack and strength, then melee could be a better choice. A ranged setup would look similar to this... Equip yourself with the following items: Neitiznot (for prayer and defence bonus) Any boots you'd like (ranger or snakeskin could benefit the most they are followed by bandos or White for praying),
Method - stand right in the front of them, shield against melee , and make use of eagle eyes. They'll likely melee the majority of the time as your d'hide / weapon will protect you from most of their magical strikes. The only damage you'll suffer most of the time is their ranged attacks.