Trade Agreements Act and Solicitation Periods

If a DoD Contracting Officer has a procurement for COTS construction and building materials (FSC 56 - a WTO GPA/CAFTA category in DFARS 225.401-70) to use for exercise-related construction during a JCS exercise in Honduras and the contract is valued at $80,000 (exceeding the $77,494 threshold at the FAR 25.402 table), does he have to publish the solicitation for 40 days pursuant to FAR 5.203(h)? (The procurement is not set aside for small businesses).

If the answer is "yes," why then, when so many categories of supplies are covered by the GPA and other FTAs, would the thresholds at FAR 25.402 not result in similar 40-day solicitation periods in many more procurements, whether for performance CONUS or OCONUS? It seems that response times are too short and that the government ignores this across the board. Or is there some other exception that they are using but of which we are unaware?

Any insight is appreciated. Thanks.