Necro twink on 25k budget

[guineapig]

At lower levels 15hp 15mana Golden Jaded Bracelets will be a much better return for you than golden Chitin. I don't think the int conversion is better on GCB till around 30 and even then you have to give up 30 hitpoints for just a few extra mana. You will also save yourself a good chunk of change.

Platinum fire wedding rings x2 of course.
Platinum sapphire necklace provides INT and STR (don't ignore strength unless your budget includes 100% WR bags).