I would have problems with your view of praying to dead saints for several reasons.
First, the Bible is clear that there is one Mediator between man and God, our Lord Jesus – 1 Timothy 2:5.
Our Lord lives forever to make intercession for us (Hebrews 7:25).
He tells us that whatever we ask Him in His name, He will do it (John 14:13-14).
Why would we possibly want to make our petitions to a mere saint, when we can and are commanded to make them to our Lord Himself. That is like seeking permission from a sergeant, when our Father is the general. I think it is an offense to God not to come to Him as our loving Father.
Also, Saul got into a great deal of trouble when he tried to consult the dead saint, Samuel (1 Samuel 28).
If the Scriptures provide us with all things necessary for life and godliness (2 Peter 1:1-4), and with them the man of God is thoroughly equipped for every good word (2 Timothy 3:14-17), then why would we employ something that the Bible does not speak of, but does speak against?