Government filing charges per the USCIS fee schedule, optional premium processing, counsel's fees for the eligibility review and petition, staff time to document the quality system, and L-2 applications for the family. The technician's regulatory conversion or any U.S. certification is a separate aviation cost.
Two budgets that should not merge
The immigration budget covers the petition and the family's derivative applications, and counsel should quote the specialized-knowledge assessment separately from drafting, with a clear statement of whether a response to a request for evidence and the eventual extension are included, since specialized-knowledge cases draw questions. The larger cost is internal: the quality manager's time writing the system description, pulling training and audit records, and coordinating with the affiliate on its implementation letter. The aviation budget is different again.
Whether the technician needs any U.S. certification to sign releases at the affiliate is a regulatory question with its own fees and timelines, and it should be settled before the petition is filed because it affects what he may lawfully do on arrival. Keep the affiliate's tooling and software purchases entirely out of both budgets; they are the affiliate's capital.
Confirm current government charges on the fee schedule in the week of filing, and note premium processing as optional.