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How to make my attack range higher. BM

Hi there,
A lot of people ask most of the time "What is your Attack range?"
I usually end up having the lower attack range then that person.
My attack range is 11xxx~13.5xx Clean, and I was wondering what I need for a better attack range.
My mesos can grow over time but I was just wondering what I can do.
My bow is a Reverse 132 attack with 12 attack Pot.
[b][/b]
Cape is +5 dex, and the pot is 3% dex + 4 Dex
My helm is pretty bad with 2% dex (Ravana Helm clean)
Earrings with 6% dex
If you can help me to upgrade things, and tell me what is best for me, Thank you.