If a buyer is paying cash, my recommendation (and in my own opinion) is that all buyers get the property inspected right away and use the full 17-day contingency period to discover what you need to discover regardless of whether you are using cash or financing. Remember you can always remove the contingency earlier once you are satisfied with what you need to know about the condition of the property and upon review of the title report. Good Luck!
Keep in mind cash buyers usually can get a 20% discount off list price!
Best of luck to you.
Kawain Payne, Realtor