My only problem with drafting a center at pick #17 is the positional value.  There have only been 8 first-round centers picked since 2000, and JPJ would be the highest draft pick used on a center, other than Mike Pouncey (Dolphins 2011) at #15 in that timeframe.  The good news is that the success rate seems to be high with multiple pro-bowl selections amongst those 8, but that makes sense in the fact that your choosing the #1 rated center with any first round pick.

So according to NFL logic, [doing math] you'd only draft JPJ if he is so dominant at that position that he's the number 1 center in 3 years.

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