Yes, I would use a 6th or 7th on a Kicker/Punter. Maybe a 5th if the dude is truly elite.
If you've noticed, a bunch of good kickers/punters from last year are all of a sudden struggling, which makes me highly suspect. Kickers like Crosby, Akers, Vinatieri, Gostkowski, etc for kickers, and a bunch of punters as well, Podlesh included.