John 6:70

70Jesus answered them, "Did I Myself not choose you, the twelve, and yet one of you is a devil?"

I am not saying that Jesus and the Father are not One. I am just suggesting that it would not be unscriptural ie a violation to pray to Jesus as He accepted worship and forgave sins just as The Father does. I know we do not have all that much to go on and I certainly think it is essential to not stray from scripture. But keep in mind though that in every instance where an Apostle was chosen, Jesus was involved. Jesus personally chose Paul as he did the others in the gospels. I don't think it is out of bounds to look at verse 24 in Acts 1 and determine that it was Jesus the Son of God whom they were praying to specifically. I see your point that the events of that Pentecost had not occured. As I said brothers, this is a worthy topic to discuss.