For me (I've never been a JW), the JW perspective of Jesus as a lesser being made even less sense to me. If Jesus is a lesser god, that means someone other than God now has all authority in heaven and earth (Matthew 28:18) and will have that authority again during the millenial reign. How is it possible that God--a jealous and sovereign God--will share His glory and honor with a created being, even requiring us to honor the Son just as we honor the Father (John 5:23)? In the Bible, worshiping a deity goes hand in hand with serving it (e.g., Exodus 20:3-5; Jeremiah 25:6; 2 Kings 17:35-36; Joshua 24:14-15). Yet the apostles identified themselves as bondservants (slaves) of Jesus. Why did they follow and serve another god that is not God?
Christ is God and man. As the Son of God, He is equal to God. That's why the Jews wanted to stone him for "making Himself equal to God" (John 5:18). As the Son of Man, He is less than God because human nature is less than God's nature. With His death and resurrection, Jesus was glorified again to the glory He had with the Father before the world was (John 17:5).
As for the JW "proof text": so God may be all in all (1 Corinthians 15:28)...I understand to mean "when all of this is over, the differentiation of the Trinity will no longer be necessary because we'll know God face to face." Overall, though, I agree with others that this isn't the make or break issue; receiving Jesus is.