Best way to gear up my Aran?

This is the character stats of my Aran :
- Level 143
- 696 Base STR
- 19 Base DEX

What would be the smartest way to gear up from top to bottom everything , and what equipments should I buy first , in order to get maximum potential from buying items.
My equipment :

( Helm ) Chaos Zakum Helmet : +35 Dex 0 Slots (H) , 3L Rare
( Eye ) Smiling Mask : Never switching this XD
( Face ) Spectrum Goggles : 3L Unique ( Crap Lines )
( Cape ) Blackfist Cloak : 3L Unique , 6% Str , 8 W.Atk
( Weapon ) Purple Surfboard : Clean
( Earrings ) Level 75 Earrings : 3L Epic , 6% STR
( Bottom )Green Commodore Pants : 8 Str 13 Dex , 3L Unique , 6% Str
( Top ) Top : Nothing
( Gloves ) Reverse Bergamot : 4 W.atk 2L Unique SE
( Shoes ) Shoes : Nothing
( Belt ) White Belt : pomegranate
( Rings ) : Evo Ring 1+2 Level 17 , Crit Ring , ZRing

Please help me in which equipment I should upgrade first to give me maximum potential / benefits. Please and Ty

EDIT 1 : I think I should also say , I don't have unlimited mesos , so I'd like to add that I need to be cost efficient , yet improving at the same time Please and Ty