The Wise: "You may hire an additional advisor when hiring advisors."
The Foreman: "At the end of your turn, before exhausting the Foreman, you may hire an advisor at a discount of -2 gold."
I'd let you hire two advisors at the end of your turn, but only one would get the discount. Either or both could be bought with reputation (but the gold discount would not normally help when buying with reputation).
Your interpretation is consistent with the wording. I was thinking that the Wise only applied to the Hire Advisor step of the turn order, but that's not what it says.