Equipment Upgrading!

I'm so glad you're not like that arrogant showoff on Sleepywood Forum...

Lol her :c

But anyways, I wouldn't raise your luk, it's perfect for an Estaff3 (the level 103 one.) I'm in the same server as you and I haven't seen many Estaff3s in the fm, but a couple Ewand7s (The level 160 one) that are around 400m or so. Assuming you have more than 2 chaos scrolls, that'd be more than enough to get one (:
With maker, you could make some really badass shoes and gloves that would come out to a higher int clean than the ones you have now and it's relatively inexpensive to make the items. Your cape is fine, but I'd upgrade your earrings. I haven't really seen the price for Earring Int scrolls in Mardia, so I can't really say whether that'd be in your budget.
In terms of a HT pend, I'd just concentrate on getting a better M.atk MON. There are a lot of guilds and groups now that would just charge 3 or 4 apples for you to go with them, or you can go with your friends and just get one for free! Plus, HT pends are what, 350m atm from 2 groups? >:
If you want a cheaper alternative to scrolling your shield, get a clean Maple Magician shield. It'd have 1-2 more int than your current esther shield.
Also, it's really easy to get a yellow or blue belt on an arch mage. Just summon ifrit and get through the first couple stages without pressing any keys (: And a belt would add a bit more int too.
But yeah, as an Arch mage, your wand/staff would be the most important. The difference in damage is eye opening. Even if the M.atk for the elemental weapon is lower than your Blue Marine, your damage would still be higher because of the 25% elemental damage increase. So, make sure to get the ice ones!
I've since quit, but if you want some clean 6 int shoes for free, PM me and find me in Mardia, best of luck!