I'd spend the $$ on Michelins. Somebody at Discount Tire talked me into Pirellis. They were awful. I had them take them off and put Michelins on after 3 days (fortunately they have a good return policy). I couldn't get those Pirellis off fast enough.
Awful in what respect?
IMO, Michelin Energy Savers are "awful" in the rain, far from the best in overall handling, and overpriced (they win this category). They do get the best FE based on tirerack's comparisons and on my experience though. But FE isn't everything (to me).
OP, even though the P4s would generally be used locally at lower speeds, I'd still compare their performance ratings with other potential substitutes for the Michelins. $430 Is a significant savings but stopping 20 feet shorter or better emergency handling could be worth a lot more than $430.