The disciples didn't ask to go speedily to spirit paradise after death. They wished to return to their Master and Lord. They specifically requested to come unto thee in thy kingdom. We may fairly assume that the Lord does not currently reside in spirit paradise but rather in his rightful place on the right hand of the Father. This is where the nine disciples wanted to go.
Bruce R. McConkie
"We conclude from this that they desired to remain in paradise for but a short time, after which they would come forth in immortal glory and sit down with Abraham, Isaac, and Jacob in the kingdom of God, to go no more out. Jesus grants their request. 'Blessed are ye because ye desired this thing of me,' he said." (Mortal Messiah, book 4, p. 388)