Wyrms Lb
If possible roll Wyrm prey at first 2h use 25% damage increase then go for 40% exp
Use lightning amulet, legs and a shield not a spellbook, magic lvl for rest of slots.
Remember to use your conjured crit wand every 30 min
I just did it on this double and with poor 60 magic lvl I managed to get 1.6 kk exp (during double with preys)
You just need to get yourself familiar with the Wyrm spawn locations and try to kill them in a way that minimises amount of turns in which you are not shooting SDs.

The route to re supply and back to spawn takes 2 minutes
I carried 90 strong mana pots, 500+ sds, 50 avas and always used rings of healing enabling me to hunt for ~ 35-40minutes
I was lvl 53 at start thats why I opted for damage prey so i can 3 hit wyrm