Few things -
probably use ahrim's instead of void magic and keep void range helm on all the time
for travel i would pest control teleport, travel squire, you'll be at port sarim go south and charter with that guy - or bot 76 agil and use fairy rings
i would bring the occult switch
I would still bring void with 85 range, magic is the most important by far so i wouldn't bother getting 90
You could maybe use ahrim's and serp with d'hide switch - not sure this is better but gets rid of venom
When you get a bit better i would use monkfish - saves quite a lot of mullla
hope this helps