General

Help me with my bad range.

So it's 875 - 1521, and while checking other people's ranges, i've noticed mine is considerably lower. I kinda messed up and made my 80 base str, but heres some stats and items.

Str 121 (80+40)
Dex 402 (342+60)

18/18/17/17 Ravana, (rest of its stats dont matter,)
4 zombie rings,
1/2 Lita's Ocean Gloves, (I just transferred a 8 att wg from my db which gave me a good hundred boost in damage)
2/2/2/2 Balrog's Leather Shoes,
1/1/1/1 100MP 100HP 10Hands 5 Jump 5 Speed Medal,
8/12 10HP (2% potential) Red Viska,
Dep Star (clean)
1/1/1/1 White Belt,
78 attack, 25 avoid, 7 dex, 120 hp Cannon Shooter.

Any help on how to increase my range (and control)? I have about 50m to spend.