Of course, there are better ways of doing that.
Better? How so? One feat at L9 as a non-Kineticist psion, or just pick it at L7 as a Kineticist, and that's Int to AC, attack, damage.
There's other ways to get Int added to attack, but none are more efficient (yes, Warblade, but they don't really use Int all that much; Factotum isn't good enough to replace psionics to make the inspiration investment worth it).