You can be stuck with RPA, CSO, or ABM if you list them on your application package. I listed pilot and CSO in the last board and got picked up for CSO. You may apply for pilot only, but your AD recruiter or interviewing officer may give you a lecture about the needs of the AF or being an officer first, aviator second. YMMV.
Many applicants who listed pilot only got phone calls saying they were not selected for pilot and were offered CSO instead.