In reply to jezb1:
Quite nice summary...two remarks:
1. I would definitely recommend twins/halfs not only because of possible abseiling in the multipitch routes (as you mention) but also because of safety (in easier routes loose rocks and sharp edges are very typical for Paklenica).
2. If you want to avoid crowds I would go in April and/or October. I was there several times and April is I think the best time for climbing.
adam