I would agree with Dave that you don't need to do a protein rest but in this case it really won't hurt either. Personally I would skip it, but if you were to do a protein rest, personally I would limit it to 5 minutes or no more than 10 minutes for sure, as a longer protein rest will indeed hurt your head retention. In my experience, 5 minutes should be all you really need to notice an effect, whereas 30 minutes would basically kill all the body and head retention characteristics of the beer. In a Belgian, not such a terrible thing necessarily, as they like their beers "digestible", but since this is more of a Belgo-American thing being an IPA, you probably wouldn't want to do it.