hmm. i think i would...
start monk
dump str, dump int
16 dex, 16 cha --the rest split between con and wis
then switch to sorcerer, draconic, for five levels --draconic for the ac boost and extra hp
then go back to monk for two more levels to get subclass
then... either get two more monk levels for extra attack or switch back to sorcerer to finish out with nine levels in sorcerer for fifth level spells
so, 5/7 or 3/9... obviously shadow monk
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the opening level of monk gives the bonus attack and allows weapons to be used with the dex modifier. that alone goes a long way for combat.
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both feats given to ability increases, dex and cha... cha first would be my leaning
urchin background for stealth and sleight of hand
