Well there are many types of monks but you mentioned simple so that would be pure melee.
budgeting shouldnt be too much of a problem since staffs are relatively cheap.
so as much ee as possible on the weapon go lvl 0,5, 10,15, 25,35,45,55 since the lower lvl staffs are cheaper
armor: robes as many stats as possible
charms: as many stats as possible str/dex ofc
all in all similar to the fighter except you wear robes and use staffs instead of swords and plate/chain mails
