Also take into account that when a TGP is equipped only two Mavericks are taken along. Firing the outer Maverick on a LAU-88 launcher would damage the TGP. As a general rule of thumb, when a two ship doesn't have enough ordnance to accomplish the mission, you bring more planes instead of loading more ordnance. You have to take weight and drag into account and not load up the plane with what would be possible according to the brochure (e.g. 6 Mavericks).
That said, there have been occasions where 6 Mavericks were carried into combat but I'll leave those stories to the people who've actually witnessed it, if there are any around here.