We know from the Church, that Judas has never been consigned to Hell.  The teaching of the Church was/is that if one dies in mortal sin----they go to Hell. But the Church has never officially consigned Judas there.  The poet Dante did, in his poem Divine Comedy [the Inferno part---Dante has Brutus there, too with Judas in the lowest part of Hell---where it is freezing cold].  

I have studied sacred scripture extensively and I did it in Jerusalem.

God does not use anybody.  If someone ASKS someone to do something---that is different.

Jesus stated that "I am the Bread of Life, unless you eat of this bread, you do not have life within you."  Of course people have access to God----but the Eucharist is Jesus coming into one's very being.