Min/Max Boards

No ToB, and not sure about PrC's. After a bit more thought devised bit to ninja dual and just pure spell thief for now,  maybe later with a dip into duskblade to channel spells, but will do some mpre reseaech to see how well that would work.

So just yesterday in our campaogn my argent was cleaved in two on his horse by a frost giant. Now I am on need of a new character and I really like the look and possibilities that a spellthief presents, however we also have no rogue in the party. Thus I am tossing up between a dual ninja 3/spellthief 3 or a straight spellthief 6. It is a faerun campaign with about 8 PC's quite a few spell casters, and we have come up against a fair few magic users so no worries there. The main tossup was with the ninja I was thinking level 3 would allow me to have the use of poison without the chance of poisoning myself, plus ghost step which would allow the charcter to ninja their way into position for a sneak attack. My main reason for coming here was thoughts on the two possibilities and very keen on suggestions (as this would be my first multiclass) and then as such decent feats and race to play? All suggestions are very warmly welcomed.  Thanks!