Since you have already indicated in the job posting that this is in anticipation of a contract award, I would suggest adding that only those who have submitted an electronic application will be considered, to encourage them to apply. If that is your established hiring process, I would follow through with that and apply it consistently to avoid issues determining who should be included in your applicant pool for these positions.
You can use this OFCCP audit checklist to ensure you're doing what is required to maintain OFCCP's regulations including VEVRAA, Section 503, and EO 11246. Or request a demo to streamline your compliance and recruiting efforts.