Nezrak should have more than enough XP to craft stuff (enough for about 68k worth I think).
Nezrak can't craft rings, but he can craft the cloak of resistance. You could technically stack both the +2 cha and +1 resistance bonuses to the cloak using the +50% cost for additional abilities rule (4,000 + 1,5 * 1,000 = 5,500 - discount = 4,675gp and 550cp), but that would need judge approval (not sure if the ring does). I personally like items with lots of bonuses.
Nezrak will gladly enchant Nars' shield. Though wouldn't it make more sense enchanting the mithral chain shirt?
Notes:
Nars:
- Gloves of Dex +2, 3,400gp, 400cp (Nars), 200cp, 160xp (Nezrak), profit 1,400gp.
- Cloak of Resistance +1, 850gp, 100cp (Nars), 50cp, 40xp (Nezrak, profit 350gp.
- +1 Mirthal Chain Shirt, 850gp, 100cp (Nars), 50cp, 40xp (Nezrak, profit 350gp.
Total: Nars pays 5,100gp and 600cp, Nezrak uses 300cp, 240xp and gains 2,100gp profit.
Rodimus:
- Belt of Strength +2, 3,400gp, 400cp (Rodimus), 200cp, 160xp (Nezrak), profit 1,400gp.
- Cloak of Resistance +1, 850gp, 100cp (Rodimus), 50cp, 40xp (Nezrak, profit 350gp.
- Bracers of Armor +1, 850gp, 100cp (Rodimus), 50cp, 40xp (Nezrak, profit 350gp.
Total: Rodimus pays 5,100gp and 600cp, Nezrak uses 300cp, 240xp and gains 2,100gp profit.
Percy:
- Amulet of Charisma +2, 3,400gp, 400cp (Percy), 200cp, 160xp (Nezrak), profit 1,400gp.
- Cloak of Resistance +1, 850gp, 100cp (Percy), 50cp, 40xp (Nezrak, profit 350gp.
Total: Percy pays 4,250gp, 500cp, Nezrak uses 250cp, 200xp and gains 1,750gp profit.
Total: Nezrak uses up 850cp, 660xp and gains 5,950gp profit.
Nezrak is still missing his second approval vote. :\