No ARA in PT yet, but I think its in the works. I would also suggest AudioSuite and render in place*. As an alternative, if everything sounds good using the inserted WavesTune, Commit up to This Plugin and de-select the option to consolidate(which should give you a new track with all the tuned/rendered audio clips in place).
*I think you may have done yourself a disservice by splitting all the clips out like you did(I think it would have been more efficient to treat the clips in their original locations)
