First Time Investor looking for advice

[Laveren Hoyt Hill]

I am a first-time investor in a contract on a home that is 74K. After the inspection, and requesting all things be fixed, the owner has come back and said that they will lower the price to 69K and that they will only fix what the lending appraiser says needs to be fixed.

The unit currently has a renter paying $650 a month that wants to stay. My plan is to raise the rent to $725 on paper this works out to be a good deal making the 1%. 

My concern is that there are a couple of potential big issues with the foundation and the inspector was not able to access certain parts of the home like the attic. Should I move forward and pay for the appraisal?