Getting Ready to Build My First Pool

My husband and I are getting ready to install an in-ground vinyl pool and are in some disagreement as to where it should be placed. Where he wants to place it is actually very good, but gets more shade until later in the morning. By 11:00 am, it should be in almost full sun for the rest of the day. I'm just wondering how much that would affect the water temperature (it's about an hour to an hour an 1/2 difference from my preference). I like my water on the warm side (85). We live in Virginia. I'm planning on a medium blue liner (Blue Mosiac). Any thoughts?