Possible dilemma on section 8 with duplex we are purchasing

[Chris Sukala]

Question for you folks,

We just had our offer accepted to purchase a duplex. Our realtor just informed us that the upper tenant applied for section 8 voucher and was approved. His rental is 650 and the housing authority is paying 575.00. However the neighborhood average rent is 775. Our plan was to raise the rent little by little  to get up to the neighborhood average but now this throws a wrench into it. Do we move forward? How do we get the housing authority to raise their amount? Then the biggest question is do we now have to take section 8 for lower unit? How should we proceed?