Wizard Arms Dealer

[Black Panda]

I'm playing in a 3.5/ whatever our dm allows(which is anything) campaign. I'm creating a lvl 4 wizard Tiefling who wants to become an arms dealer who specializes in magic tattoos for defense that he makes for rich nonmagical npcs. My long term plans involve getting a demiplane of my own creation (per the PF greater demiplane spell) to keep my unseen Crafters working at while I continue adventuring. Looking for tips or ideas to help me make this happen for

[Nifft]

Graft Flesh seems very useful if you want to sell arms (tattooed or clean).

Craft Wondrous Item would allow you to create arms of the naga (Savage Species) or a third hand (Magic Item Compendium).

[noob]

there is a construct that is a tatoo that protects its owner in pathfinder.
(it is also a weapon and it might grab stuff in a pinch thus possibly serving as an arm)