I don't know if a 39 year old Ray Allen is going to put them over the top. Their back court is great as is. Their problem will be in their front court. They are a Bogut injury away from having no rim protection (not that I wish any injury upon Andrew). The Spurs are still the team to beat this year.
15 minutes? you only need him for 20 seconds. But honestly, just the threat of having a ray allen on the floor will make any defense stay at home on him. He doesn't even have to very involved on either end of the floor.