That is not exactly what I intend to do. My original idea is to add the 2.875" (5.5 ripped, minus .125 for the saw blade) to the bottom of the current joists, effectively changing the 1.5 x 7 joists to 1.5 x 9.875 and the 1.5 x 7.25 joists to 1.5 x 10.125 (actual).
To be clear, I intend to add...